Asus P8B75-M LX User Manual

Motherboard

P8B75-M LX

E7741

Second Edition (V2) August 2012

No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).

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iii

Contents

Safety information ...................................................................................... vi

About this guide ......................................................................................... vi

P8B75-M LX specications summary ..................................................... viii

Chapter 1 Product introduction

1.1 Welcome! ...................................................................................... 1-1

1.2 Package contents ......................................................................... 1-1

1.3 Special features ............................................................................ 1-1

1.3.1 Product highlights ........................................................... 1-1

1.3.2 Innovative ASUS features ............................................... 1-3

1.4 Before you proceed ..................................................................... 1-5

1.5 Motherboard overview ................................................................. 1-6

1.5.1 Placement direction ........................................................ 1-6

1.5.2 Screw holes .................................................................... 1-6

1.5.3 Motherboard layout ......................................................... 1-7

1.5.4 Layout contents ............................................................... 1-7

1.6 Central Processing Unit (CPU) ................................................... 1-8

1.6.1 Installing the CPU ........................................................... 1-9

1.6.2 CPU heatsink and fan assembly installation ..................1-11

1.7 System memory ......................................................................... 1-13

1.7.1 Overview ....................................................................... 1-13

1.7.2 Memory congurations .................................................. 1-13

1.7.3 Installing a DIMM .......................................................... 1-20

1.7.4 Removing a DIMM ........................................................ 1-20

1.8 Expansion slots .......................................................................... 1-21

1.8.1 Installing an expansion card ......................................... 1-21

1.8.2 Conguring an expansion card ..................................... 1-21

1.8.3 PCI slot ......................................................................... 1-21

1.8.4 PCI Express 2.0 x1 slots ............................................... 1-21

1.8.5 PCI Express 3.0/2.0 x16 slot ......................................... 1-21

1.9 Jumpers ...................................................................................... 1-22

1.10 Connectors ................................................................................. 1-23

1.10.1 Rear panel connectors .................................................. 1-23

1.10.2 Internal connectors ....................................................... 1-25

1.11 Onboard LEDs ............................................................................ 1-31

Contents

1.13 Software support ........................................................................ 1-32

1.13.1 Installing an operating system ...................................... 1-32

1.13.2 Support DVD information .............................................. 1-32

1.13.3 Intel® SBA support ......................................................... 1-33

Chapter 2 BIOS information

2.1 Managing and updating your BIOS ............................................ 2-1

2.1.1 ASUS Update utility ........................................................ 2-1

2.1.2 ASUS EZ Flash 2 ............................................................ 2-2

2.1.3 ASUS CrashFree BIOS 3 utility ...................................... 2-3

2.1.4 ASUS BIOS Updater ....................................................... 2-4

2.2 BIOS setup program .................................................................... 2-6

2.3 Main menu .................................................................................. 2-10

2.3.1 System Language [English] .......................................... 2-10

2.3.2 System Date [Day xx/xx/xxxx] ....................................... 2-10

2.3.3 System Time [xx:xx:xx] ................................................. 2-10

2.3.4 Security ......................................................................... 2-10

2.4 Ai Tweaker menu ........................................................................ 2-12

2.4.1 ASUS MultiCore Enhancement [Enabled]. .......................2-12

2.4.2 CPU bus speed: DRAM speed ratio mode [Auto] ......... 2-12

2.4.3 Memory Frequency [Auto] ............................................. 2-13

2.4.4 iGPU Max. Frequency [Auto] ........................................ 2-13

2.4.5 GPU Boost [OK] ............................................................ 2-13

2.4.6 DRAM Timing Control ................................................... 2-13

2.4.7 CPU Power Management ............................................. 2-13

2.5 Advanced menu ......................................................................... 2-15

2.5.1 CPU Conguration ........................................................ 2-15

2.5.2 PCH Conguration ........................................................ 2-16

2.5.3 SATA Conguration ....................................................... 2-17

2.5.4 System Agent Conguration ......................................... 2-18

2.5.5 AMT Conguration ........................................................ 2-18

2.5.6 USB Conguration ........................................................ 2-19

2.5.7 Onboard Devices Conguration .................................... 2-20

2.5.8 APM .............................................................................. 2-21

2.5.9 Network Stack ............................................................... 2-21

2.6 Monitor menu ............................................................................. 2-22

Contents

2.6.1 CPU Temperature / MB Temperature [xxxºC/xxxºF] ...... 2-23

2.6.2 CPU / Chassis Fan Speed [xxxx RPM] or [Ignore] / [N/A] 2-23

2.6.3 CPU Q-Fan Control [Enabled] ...................................... 2-23

2.6.4 Chassis Q-Fan Control [Enabled] ................................. 2-24

2.6.5 CPU Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage .. 2-24

2.6.6 Anti Surge Support [Enabled] ....................................... 2-24

2.7 Boot menu .................................................................................. 2-25

2.7.1 Bootup NumLock State [On] ......................................... 2-25

2.7.2 Full Screen Logo [Enabled] ........................................... 2-25

2.7.3 Wait for ‘F1’ If Error [Enabled] ....................................... 2-25

2.7.4 Option ROM Messages [Force BIOS] ........................... 2-26

2.7.5 Setup Mode [EZ Mode] ................................................. 2-26

2.7.6 UEFI/Legacy Boot [Enabled both UEFI and Legacy] .... 2-26

2.7.7 PCI ROM Priority [Legacy ROM] .................................. 2-26

2.7.8 Boot Option Priorities .................................................... 2-26

2.7.9 Boot Override ................................................................ 2-26

2.8 Tools menu ................................................................................. 2-27

2.8.1 ASUS EZ Flash 2 Utility ................................................ 2-27

2.8.2 ASUS O.C. Prole ......................................................... 2-27

2.8.3 ASUS SPD Information ................................................. 2-27

2.9 Exit menu .................................................................................... 2-28

Appendices

Notices .......................................................................................................A-1

ASUS contact information .......................................................................A-3

Safety information

Electrical safety

• To prevent electric shock hazard, disconnect the power cable from the electric outlet

before relocating the system.

• When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device.

• Before connecting or removing signal cables from the motherboard, ensure that all power cables are unplugged.

• Seek professional assistance before using an adapter or extension cord. These devices could interrupt the grounding circuit.

• Ensure that your power supply is set to the correct voltage in your area. If you are not sure about the voltage of the electrical outlet you are using, contact your local power company.

• If the power supply is broken, do not try to x it by yourself. Contact a qualied service

technician or your retailer.

Operation safety

•

Before installing the motherboard and adding devices on it, carefully read all the manuals that came with the package.

•

Before using the product, ensure that all cables are correctly connected and the power cables are not damaged. If you detect any damage, contact your dealer immediately.

•

To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry.

•

Avoid dust, humidity, and temperature extremes. Do not place the product in any area where it may become wet.

•

Place the product on a stable surface.

•

If you encounter technical problems with the product, contact a qualied service

technician or your retailer.

About this guide

This user guide contains the information you need when installing and conguring the

motherboard.

How this guide is organized

This guide contains the following parts:

• Chapter 1: Product introduction

This chapter describes the features of the motherboard and the new technology it

supports.

• Chapter 2: BIOS information

This chapter tells how to change system settings through the BIOS Setup menus.

Detailed descriptions of the BIOS parameters are also provided.

vii

Conventions used in this guide

To ensure that you perform certain tasks properly, take note of the following symbols used throughout this manual.

DANGER/WARNING: Information to prevent injury to yourself when trying to

complete a task.

CAUTION: Information to prevent damage to the components when trying to

complete a task.

NOTE: Tips and additional information to help you complete a task.

IMPORTANT: Instructions that you MUST follow to complete a task.

Where to nd more information

Refer to the following sources for additional information and for product and software updates.

1. ASUS websites

The ASUS website provides updated information on ASUS hardware and software

products. Refer to the ASUS contact information.

2. Optional documentation

Your product package may include optional documentation, such as warranty yers,

that may have been added by your dealer. These documents are not part of the standard package.

Typography

Bold text Indicates a menu or an item to select.

Italics

Used to emphasize a word or a phrase.

<Key> Keys enclosed in the less-than and greater-than sign means that you must press the enclosed key. Example: <Enter> means that you must press the Enter or Return key.

<Key1>+<Key2>+<Key3> If you must press two or more keys simultaneously, the key names are linked with a plus sign (+). Example: <Ctrl>+<Alt>+<D>

viii

P8B75-M LX specications summary

(continued on the next page)

CPU LGA1155 socket for Intel® 2nd / 3rd Generation Core™ i7 /

Core™ i5 / Core™ i3 processors Supports Intel 22/32nm CPU Supports Intel® Turbo Boost Technology 2.0 * The Intel® Turbo Boost Technology 2.0 support depends on the

CPU types.

** Refer to www.asus.com for Intel® CPU support list.

Chipset Intel® B75 Express Chipset Memory 2 x DIMM, max. 16GB*, DDR3 2200(O.C.) / 2133(O.C.) / 2000(O.

C.) /1800(O.C.) / 1600 / 1333 / 1066 MHz, non-ECC, un-buffered memory Dual-channel memory architecture

* 1600MHz and higher frequency is supported by Intel® 3rd

generation processors. ** Refer to www.asus.com for the latest Memory QVL (Qualied Vendors List). *** When you install a total memory of 4GB capacity or more,

Windows® 32-bit operating system may only recognize less than 3GB. We recommend a maximum of 3GB system memory if you are using a Windows® 32-bit operating system.

Graphics Integrated graphics processor

Multi-VGA output support: DVI-D and D-Sub ports

Supports DVI-D with max.resolution of 1920 x 1200 @60Hz Supports D-Sub with max. resolution of 2048 x 1536 @75Hz

Maximum shared memory of 1 GB

Expansion slots 1 x PCI Express 3.0/2.0 x16 slot

2 x PCI Express 2.0 x1 slots 1 x PCI slot

Storage Intel® B75 Express Chipset:

- 5 x Serial ATA 3.0 Gb/s connectors (blue)

- 1 x Serial ATA 6.0 Gb/s connector (gray)

LAN

Realtek® 8111F-VB-CG PCIe Gigabit LAN controller

Audio VIA® VT1708S 8-channel* High Denition Audio CODEC

- Supports jack-detection, multi-streaming, anti-pop function, and front panel jack-retasking

* Use a chassis with HD audio module in the front panel to support

an 8-channel audio output.

USB Intel® B75 Express Chipset:

- 4 x USB 3.0/2.0 ports (2 ports at midboard, 2 ports at back

panel)

- 8 x USB 2.0/1.1 ports (4 ports at midboard, 4 ports at back

panel)

P8B75-M LX specications summary

ASUS unique features ASUS Exclusive Features:

- ASUS GPU Boost

- ASUS USB 3.0 Boost

- LucidLogix® Virtu MVP

- Network iControl

- ASUS AI Suite II

- Ai Charger

- ASUS Anti-Surge Protection

- ASUS UEFI BIOS featuring graphics user interface ASUS Quiet Thermal Solution:

- ASUS Fan Xpert ASUS EZ DIY:

- ASUS CrashFree BIOS 3

- ASUS EZ Flash 2

- ASUS MyLogo 2™

Rear panel I/O ports 1 x PS/2 keyboard/mouse combo port (purple/green)

1 x DVI-D port 1 x D-Sub port 1 x LAN (RJ-45) port 4 x USB 2.0/1.1 ports 2 x USB 3.0/2.0 ports (blue) 3 x Audio jacks

Internal connectors/ switches/ buttons

1 x USB 3.0 connector supports additional 2 USB 3.0 ports 2 x USB 2.0 connectors support additional 4 USB 2.0 ports 5 x SATA 3.0 Gb/s connectors (blue) 1 x SATA 6.0 Gb/s connector (gray) 1 x CPU fan connector 1 x Chassis fan connectors 1 x COM connector 1 x LPT connector 1 x Front panel audio connector (AAFP) 1 x S/PDIF output connector 1 x System panel connector 1 x Speaker connector 1 x 24-pin ATX power connector 1 x 4-pin ATX 12V power connector 1 x chassis intrusion connector 1 x CLRTC connector

(continued on the next page)

* Specications are subject to change without notice.

BIOS features 128 Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS

2.5, ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3

Manageability

WfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE

Accessories 1 x Serial ATA 3.0Gb/s cable

1 x Serial ATA 6.0Gb/s cable 1 x I/O shield 1 x User Manual 1 x Support DVD

Support DVD Drivers

ASUS utilities ASUS Update Anti-virus software (OEM version)

Form factor

MicroATX form factor: 9.6”x 7.8” (24.4cm x 19.8cm)

P8B75-M LX specications summary

ASUS P8B75-M LX 1-1

Chapter 1 Product introduction

Motherboard ASUS P8B75-M LX motherboard

Cables 1 x Serial ATA 6.0Gb/s cable

1 x Serial ATA 3.0Gb/s cable

Accessories 1 x I/O shield

Application DVD ASUS motherboard support DVD

Documentation User Manual

If any of the above items is damaged or missing, contact your retailer.

1.3 Special features

1.3.1 Product highlights

LGA1155 socket for Intel® 3rd/2nd Generation Core™ i7 / Core™ i5 / Core™ i3 processors

This motherboard supports the Intel® 3rd/2nd generation Core™ i7 / Core™ i5 / Core™ i3 processors in the LGA1155 package, with memory and PCI Express controllers integrated to support dual-channel (4 DIMMs) DDR3 memory and 16 PCI Express 3.0 lanes. This provides great graphics performance. Intel® 3rd/2nd generation Core™ i7 / Core™ i5 / Core™ i3 processors are among the most powerful and energy

efcient CPUs in the world.

1.1 Welcome!

Thank you for buying an ASUS® P8B75-M LX motherboard! The motherboard delivers a host of new features and latest technologies, making it another

standout in the long line of ASUS quality motherboards! Before you start installing the motherboard, and hardware devices on it, check the items in

your package with the list below.

1.2 Package contents

Check your motherboard package for the following items.

1-2 Chapter 1: Product introduction

Intel® B75 Express Chipset

The Intel® B75 Express Chipset is the latest single-chipset designed to support the 1155 socket Intel® 3rd/2nd generation Core™ i7 / Core™ i5 /

Core™ i3 processors. It provides improved performance by utilizing serial

point-to-point links, allowing increased bandwidth and stability. In addition, B75 chipset provides 4 USB 3.0 ports that retrieves data 10 times faster. Moreover, Intel® B75 Express Chipset also supports iGPU function, letting users enjoy the latest Intel integrated graphic performance.

Dual-Channel DDR3 2400(O.C.) / 2250(O.C.) / 2200(OC.) / 2133(O.C.) / 2000 / 1866 /1600 / 1333 / 1066MHz support

The motherboard supports DDR3 memory that features data transfer rates of 2400(O.C.) / 2250(O.C.) / 2200(OC.) / 2133(O.C.) / 2000 / 1866

/1600 / 1333 / 1066 MHz to meet the higher bandwidth requirements

of the latest 3D graphics, multimedia, and Internet applications. The dual-channel DDR3 architecture enlarges the bandwidth of your system memory to boost system performance.

* Due to the behavior of Intel® 3rd Generation processor, DDR3 2250 (and

above)/2133/1866 MHz memory module will run at DDR3 2200/2000/1800 MHz frequency as default.

Native SATA 6.0 Gb/s support

The Intel® B75 Express Chipset natively supports next-generation Serial ATA (SATA) storage interface. This motherboard delivers up to 6.0 Gb/s data transfer rates. Additionally, get enhanced scalability, faster data retrieval, double the bandwidth of current bus systems.

Complete USB 3.0 Integration

ASUS facilitates strategic USB 3.0 accessibility for both the front and rear panel – 4 USB 3.0 ports in total. Experience the latest plug & play connectivity at speeds up to 10 times faster than USB 2.0. This motherboard affords greater convenience to high speed connectivity.

PCI Express® 3.0

PCI Express® 3.0 (PCIe 3.0) is the latest PCI Express bus standard with improved encoding schemes that provide twice the performance of the current PCIe 2.0. The total bandwidth for a x16 link reaches a maximum of 32Gb/s, double the 16 Gb/s of PCIe 2.0 (in x16 mode). As such, PCIe

3.0 provides users an unprecendented data speeds, combined with the convenience and seamless transition offerred by complete backward compatibility with PCIe 1.0 and PCIe 2.0 devices. PCIe 3.0 will become

a must-have feature for users who wish to improve and optimize graphic

performance, as well as have the latest technology available to them.

* PCI 3.0 speed is supported by Intel® 3rd generation Core™ processors.

ASUS P8B75-M LX 1-3

1.3.2 Innovative ASUS features

ASUS UEFI BIOS

Flexible and Easy BIOS Interface

ASUS UEFI BIOS offers the rst mouse-controlled graphical BIOS

designed with selectable modes, providing a user-friendly interface that goes beyond the traditional keyboard-only controls. It also natively

supports fully-utilized hard drives larger than 2.2TB in 64-bit operating

systems.

ASUS exclusive interface

EZ Mode displays frequently-accessed info. Users can choose system performance settings, and drag and drop boot priorities. Advanced Mode for performance enthusiasts includes detailed DRAM settings via a dedicated memory info page for complete insight.

New upgrade! Quick and easy information for enhanced system control

- F12 BIOS snapshot hotkey for sharing UEFI information and

troubleshooting

- New F3 Shortcut for most accessed information

- ASUS DRAM SPD (Serial Presence Detect) information for accessing

memory information, detecting faulty DIMMs, and helping with difcult

POST situations.

LucidLogix Virtu MVP

LucidLogix Virtu MVP featuring HyperFormance™ Technology boosts your discrete graphics card up to 60% beyond its original performance. Designed for Intel® processor graphics and Windows® 7 PCs, it perfectly combines the performance of discrete graphic cards with fast computing iGPU. Also, with newly designed Virtual Sync, users can enjoy a smoother gaming experience by eliminating tearing artifacts. LucidLogix Virtu MVP can also dynamically assigns tasks to the best available graphics resource, based on power, performance, and system load.

This allows users to fully utilize 3x faster video conversion with Intel

Quick Sync Video technology while retaining high-end 3D rendering and gaming performance, provided by both NVIDIA and AMD graphic cards. When the discrete graphic card is not required, power consumption

goes automatically down to near zero, making the system more

environmentally-friendly. For users searching for perfection, LucidLogix

Virtu MVP provides great graphical performance, and the best exibility and efciency.

* LucidLogix Virtu MVP supports Windows

operating system.

** Intel® Quick Sync Video feature is supported by 3rd/2nd generation Intel®

Core™ processor family

1-4 Chapter 1: Product introduction

USB 3.0 Boost

With USB 3.0 Boost technology, a USB device’s transmission speed is signicantly increased, adding to an already impressive fast USB 3.0

transfer speed. ASUS software automatically accelerates data speeds for compatible USB 3.0 peripherals without the need for any user interaction.

GPU Boost

Go to the Limit with iGPU Level Up!

GPU Boost accelerates the integrated GPU for extreme graphics

performance. The user-friendly interface facilitates exible frequency

adjustments. It easily delivers stable system-level upgrades for every use.

AI Suite II

With its fast user-friendly interface, ASUS AI Suite II consolidates all the exclusive ASUS features into one simple to use software package. It allows you to supervise overclocking, energy management, fan speed control, and voltage and sensor readings. This all-in-one software offers diverse and ease to use functions, with no need to switch back and forth between different utilities.

ASUS Anti-Surge Protection

This special design prevents expensive devices and the motherboard from damage caused by power surges from switching power supply (PSU).

Network iControl

With a one-click on/off button, the software currently in use is set as top priority over all other network programs, dominating the network

bandwidth with ease. Moreover, you can prioritize your favorite software easily by conguring proles through the intutive user interface. Within the prole, programs can be pre-scheduled to run in a specic time period

to avoid network clogging and long-waits on downloads. Auto PPPoE network connection gives a one-step setup and an intuitive network bandwidth control center.

ASUS Fan Xpert

ASUS Fan Xpert intelligently allows you to adjust the CPU fan and chassis fan speeds according to different ambient temperatures caused by different climate conditions in different geographic regions and your

PC’s loading. The built-in variety of useful proles offer exible controls of

fan speed to achieve a quiet and cool environment.

Ai Charger

Ai Charger is ASUS fast-charging software that supports iPod, iPhone, and iPad.

• Check your USB mobile device if it fully supports the BC 1.1 function.

• The actual charging speed may vary with your USB device’s conditions.

ASUS P8B75-M LX 1-5

1.4 Before you proceed

Take note of the following precautions before you install motherboard components or change any motherboard settings.

• Unplug the power cord from the wall socket before touching any component.

• Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, to avoid damaging them due to static electricity.

• Hold components by the edges to avoid touching the ICs on them.

• Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component.

• Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components.

ASUS MyLogo2™

This feature allows you to convert your favorite photo into a 256-color boot logo for a more colorful and vivid image on your screen.

ASUS CrashFree BIOS 3

ASUS CrashFree BIOS 3 is an auto-recovery tool that allows you to

restore a corrupted BIOS le using the bundled support DVD or USB ash disk that contains the latest BIOS le.

ASUS EZ Flash 2

ASUS EZ Flash 2 is a utility that allows you to update the BIOS without using an OS-based utility.

C.P.R. (CPU Parameter Recall)

The BIOS C.P.R. feature automatically restores the CPU default settings when the system hangs due to overclocking failure. C.P.R. eliminates the need to open the system chassis and clear the RTC data. Simply shut down and reboot the system, and the BIOS automatically restores the CPU parameters to their default settings.

ErP ready

The motherboard is European Union´s Energy-related Products (ErP)

ready, and ErP requires products to meet certain energy efciency

requirements in regards to energy consumptions. This is in line with

ASUS vision of creating environment-friendly and energy-efcient

products through product design and innovation to reduce carbon footprint of the product and thus mitigate environmental impacts.

1-6 Chapter 1: Product introduction

P8B75-M LX

1.5 Motherboard overview

Before you install the motherboard, study the conguration of your chassis to ensure that the motherboard ts into it.

Ensure that you unplug the power cord before installing or removing the motherboard. Failure to do so can cause you physical injury and damage motherboard components.

1.5.1 Placement direction

When installing the motherboard, ensure that you place it into the chassis in the correct orientation. The edge with external ports goes to the rear part of the chassis as indicated in the image below.

1.5.2 Screw holes

Place six screws into the holes indicated by circles to secure the motherboard to the chassis.

Do not overtighten the screws! Doing so can damage the motherboard.

Place this side towards the rear of the chassis

ASUS P8B75-M LX 1-7

1.5.3 Motherboard layout

1.5.4 Layout contents

Connectors/Jumpers/Slots/LED Page Connectors/Jumpers/Slots/LED Page

1. CPU and chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN)

1-27 10. Clear RTC RAM (3-pin CLRTC) 1-22

2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)

1-26 11. USB 2.0 connectors (10-1 pin USB56,

USB78)

1-30

3. Intel® LGA1155 CPU socket 1-8 12. Onboard LED (SB_PWR) 1-31

4. DDR3 DIMM slots 1-13 13. LPT connector (26-1 pin LPT) 1-27

5. USB 3.0 connector (20-1 pin USB3_34) 1-30 14 Digital audio connector (4-1 pin SPDIF_OUT) 1-25

6. Intel® B75 Serial ATA 3.0Gb/s connectors (7-pin SATA3G_1~5 [blue])

1-29 15. Serial port connector (10-1 pin COM1) 1-26

7. Intel® B75 Serial ATA 6.0Gb/s connectors (7-pin SATA6G_1 [gray])

1-29 16. Front panel audio connector (10-1 pin AAFP) 1-25

8. System panel connector (10-1 pin F_PANEL) 1-28 17. Chassis intrusion connector (4-1 pin

CHASSIS)

1-31

9. Speaker connector (4-pin SPEAKER) 1-28

P8B75-M LX

PCIEX16_1

PCIEX1_1

PCIEX1_2

PCI1

AAFP

EATXPWR

CPU_FAN

CHA_FAN

Lithium Cell

CMOS Power

Super

I/O

VIA

VT1708S

KBMS_USB34

8Mb BIOS

SB_PWR

CLRTC

19.8cm(7.8in)

24.4cm(9.6in)

Intel

B75

DDR3 DIMM_A1 (64bit, 240-pin module)

DDR3 DIMM_B1 (64bit, 240-pin module)

SATA3G_1

SATA3G_2

SATA3G_3SATA3G_4

SATA6G_1SATA3G_5

AUDIO

USB3_12

LAN_USB12

SPDIF_OUT

LPT

LGA1155

USB3_34

F_PANEL

SPEAKER

USB56USB78

COM1

CHASSIS

RTL

8111F

ATX12V

VGA

DVI

1 12 3 4

611 79 8121315 1416 1017

1-8 Chapter 1: Product introduction

1.6 Central Processing Unit (CPU)

The motherboard comes with a surface mount LGA1155 socket designed for the Intel® 3rd/2nd generation Core™ i7 / Core™ i5 / Core™ i3 processors.

Unplug all power cables before installing the CPU.

• Upon purchase of the motherboard, ensure that the PnP cap is on the socket and the socket contacts are not bent. Contact your retailer immediately if the PnP cap is missing, or if you see any damage to the PnP cap/socket contacts/motherboard components. ASUS will shoulder the cost of repair only if the damage is shipment/transit-related.

• Keep the cap after installing the motherboard. ASUS will process Return Merchandise

Authorization (RMA) requests only if the motherboard comes with the cap on the

LGA1155 socket.

• The product warranty does not cover damage to the socket contacts resulting from incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP cap.

Right

P8B75-M LX

P8B75-M LX CPU socket LGA1155

ASUS P8B75-M LX 1-9

1.6.1 Installing the CPU

The LGA1156 CPU is incompatible with the LGA1155 socket. DO NOT install a LGA1156 CPU on the LGA1155 socket.

1-10 Chapter 1: Product introduction

ASUS P8B75-M LX 1-11

1.6.2 CPU heatsink and fan assembly installation

Apply the Thermal Interface Material to the CPU heatsink and CPU before you install the heatsink and fan if necessary.

To install the CPU heatsink and fan assembly

1-12 Chapter 1: Product introduction

To uninstall the CPU heatsink and fan assembly

ASUS P8B75-M LX 1-13

P8B75-M LX

P8B75-M LX 240-pin DDR3 DIMM sockets

DIMM_A1

DIMM_B1

1.7 System memory

1.7.1 Overview

The motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules (DIMM) sockets. A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for better performance with less power consumption.

The gure illustrates the location of the DDR3 DIMM sockets:

Channel Sockets

Channel A DIMM_A1

Channel B DIMM_B1

1.7.2 Memory congurations

You may install 1GB, 2GB, 4GB and 8GB unbuffered non-ECC DDR3 DIMMs into the DIMM sockets.

• The default memory operation frequency is dependent on its Serial Presence Detect (SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value. To operate at the vendor-marked or at a higher frequency, refer to section 2.4 Ai Tweaker menu for manual memory frequency adjustment.

• For system stability, use a more efcient memory cooling system to support a full

memory load (2 DIMMs) or overclocking condition.

• You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel conguration. Any excess memory from the higher-sized channel is then mapped for single-channel operation.

• Due to Intel® 3rd generation processors' behavior, DDR3 2250 (and above)/2133/1866

MHz memory module will run at DDR3 2200/2000/1800 MHz frequency as default.

• Always install DIMMs with the same CAS latency. For optimum compatibility, we recommend that you obtain memory modules from the same vendor.

• Due to the memory address limitation on 32-bit Windows® OS, when you install 4GB or more memory on the motherboard, the actual usable memory for the OS can be about 3GB or less. For effective use of memory, we recommend that you do any of the following:

- Use a maximum of 3GB system memory if you are using a 32-bit Windows

OS.

- Install a 64-bit Windows® OS when you want to install 4GB or more on the

motherboard.

• This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less.

1-14 Chapter 1: Product introduction

P8B75-M LX Motherboard Qualied Vendors Lists (QVL)

DDR3-2400 MHz capability

Vendors Part No. Size

SS/DSChip

Brand

Chip NO. Timing Voltage

DIMM socket support

(Optional)

1 DIMM 2 DIMMs

CORSAIR CMGTX8(XMP) 8GB(2GBx 4) SS - - 10-12-10-27 1.65V • •

G.SKILL

F3-19200CL11Q16GBZHD(XMP1.3)

16GB(4GB x4) DS - - 11-11-11-31 1.65V • •

G.SKILL

F3-19200CL9D4GBPIS(XMP)

4GB(2x 2GB) DS - - 9-11-9-28 1.65V • •

GEIL GET34GB2400C9DC(XMP) 2GB DS - - 9-11-9-27 1.65V • •

KINGMAX

FLLE88F-C8KKAA HAIS(XMP)

2GB SS - - 10-11-10-30 1.8V • •

Transcend

TX2400KLU4GK(427652)(XMP)

4GB(2 x 2GB) SS - - - 1.65V • •

Transcend

TX2400KLU-4GK (381850)(XMP)

4GB(2x 2GB) SS - - 9 1.65V • •

Transcend

TX2400KLU4GK(374243)(XMP)

4GB(2x 2GB) DS - - 9 1.65V •

Vendors Part No. Size SS/DS

Chip

Brand

Chip NO. Timing Voltage

DIMM socket support

(Optional)

1 DIMM 2 DIMMs

G.SKILL F3-17600CL8D-4GBPS(XMP) 4GB(2 x 2GB) DS - - 8-8-8-24 1.65V • • GEIL GET34GB2200C9DC(XMP) 2GB DS - - 9-10-9-28 1.65V • • GEIL GET38GB2200C9ADC(XMP) 4GB DS - - 9-11-9-28 1.65V • • KINGMAX FLKE85F-B8KJAA-FEIS(XMP) 2GB DS - - - - • • KINGMAX FLKE85F-B8KHA EEIH(XMP) 4GB(2 x 2GB) DS - - - 1.5V-1.7V • KINGMAX FLKE85F-B8KJA FEIH(XMP) 4GB(2 x 2GB) DS - - - 1.5V-1.7V • •

DDR3-2200 MHz capability

DDR3-2250 MHz capability

Vendors Part No. Size SS/DS

Chip

Brand

Chip NO. Timing Voltage

DIMM socket support

(Optional)

1 DIMM 2 DIMMs

KINGSTON KHX2250C9D3T1K2/4GX(XMP) 4GB(2 x 2GB) DS - - - 1.65V • •

DDR3-2133 MHz capability

Vendors Part No. Size

SS/DSChip

Brand

Chip

NO.

Timing Voltage

DIMM socket support

(Optional)

1 DIMM 2 DIMMs

A-DATA AX3U2133GC2G9B-DG2(XMP) 2GB SS - - 9-11-9-27 1.55~1.75V • CORSAIR CMT4GX3M2A2133C9(XMP) 4GB(2x 2GB) DS - - 9-10-9-24 1.65V • CORSAIR CMT4GX3M2B2133C9(XMP) 4GB(2x 2GB) DS - - 9-10-9-27 1.50V • • G.SKILL F3-17000CL9Q-16GBZH(XMP1.3) 16GB ( 4GB x4 ) DS - - 9-11-10-28 1.65V • GEIL GE34GB2133C9DC(XMP) 2GB DS - - 9-9-9-28 1.65V • • GEIL GU34GB2133C9DC(XMP) 4GB(2 x 2GB) DS - - 9-9-9-28 1.65V • • KINGSTON KHX2133C9AD3T1K2/4GX(XMP) 4GB ( 2x 2GB ) DS - - - 1.65V • • KINGSTON KHX2133C9AD3W1K2/4GX(XMP) 4GB ( 2x 2GB ) DS - - - 1.65V • • KINGSTON KHX2133C9AD3X2K2/4GX(XMP) 4GB(2 x 2GB) DS - - 9-11-9-27 1.65V • KINGSTON KHX2133C9AD3T1K4/8GX(XMP) 8GB(4 x 2GB) DS - - 9-11-9-27 1.65V • •

KINGSTON

KHX2133C9AD3T1FK4/ 8GX(XMP)

8GB(4x 2GB) DS - - - 1.65V •

ASUS P8B75-M LX 1-15

Vendors Part No. Size SS/DS

Chip

Brand

Chip

NO.

Timing Voltage

DIMM socket

support (Optional) 1 DIMM 2 DIMMs

Apacer 78.AAGD5.9KD(XMP) 6GB(3 x 2GB) DS - - 9-9-9-27 1.65V • • CORSAIR CMZ4GX3M2A2000C10(XMP) 4GB(2 x 2GB) SS - - 10-10-10-27 1.50V • • CORSAIR CMT6GX3M3A2000C8(XMP) 6GB(3 x 2GB) DS - - 8-9-8-24 1.65V • • G.SKILL F3-16000CL9D-4GBFLS(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V • • G.SKILL F3-16000CL9D-4GBTD(XMP) 4GB(2 x 2GB) DS - - 9-9-9-27 1.65V • • G.SKILL F3-16000CL6T-6GBPIS(XMP) 6GB (3x 2GB ) DS - - 6-9-6-24 1.65V • • GEIL GUP34GB2000C9DC(XMP) 4GB(2 x 2GB) DS - - 9-9-9-28 1.65V • •

KINGSTON

KHX2000C9AD3T1K2/ 4GX(XMP)

4GB ( 2x 2GB ) DS - - - 1.65V • •

KINGSTON

KHX2000C9AD3W1K2/ 4GX(XMP)

4GB ( 2x 2GB ) DS - - - 1.65V • •

KINGSTON

KHX2000C9AD3T1K2/ 4GX(XMP)

4GB(2 x 2GB) DS - - 9 1.65V • •

KINGSTON

KHX2000C9AD3W1K3/ 6GX(XMP)

6GB ( 3x 2GB ) DS - - - 1.65V • •

KINGSTON

KHX2000C9AD3T1K3/ 6GX(XMP)

6GB (3x 2GB ) DS - - - 1.65V • •

Transcend TX2000KLN-8GK(XMP) 8GB(2 x 4GB) DS - - - 1.6V • •

DDR3-2000 MHz capability

DDR3-1866 MHz capability

Vendors Part No. Size SS/DS

Chip

Brand

Chip

NO.

Timing Voltage

DIMM socket

support (Optional)

1 DIMM 2 DIMM

A-DATA

AX3U1866PB2G8DP2(XMP)

2GB DS - - 8-8-8-24 1.55V-1.75V • •

CORSAIR CMT4GX3M2A1866C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V • • CORSAIR CMT6GX3MA1866C9(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.65V • • CORSAIR CMZ8GX3M2A1866C9(XMP) 8GB(2 x 4GB) DS - - 9-10-9-27 1.50V • •

G.SKILL

F3-14900CL9Q16GBZL(XMP1.3)

16GB(4 x 4GB) DS - - 9-10-9-28 1.5V • •

G.SKILL

F3-14900CL10Q264GBZLD(XMP1.3)

64GB(8 x 8GB) DS - - 10-11-10-30 1.5V • •

G.SKILL

F3-14900CL9Q8GBXL(XMP)

8GB(4 x 2GB) DS - - 9-9-9-24 1.6V • •

KINGSTON

KHX1866C9D3T1K3/ 3GX(XMP)

3GB(3 x 1GB) SS - - - 1.65V • •

KINGSTON

KHX1866C9D3K4/ 16GX(XMP)

16GB(4 x4GB) DS - - - 1.65V • •

KINGSTON

KHX1866C9D3T1K3/ 6GX(XMP)

6GB(3 x 2GB) DS - - - 1.65V • •

KINGSTON KHX1866C11D3P1K2/8G 8GB(2 x 4GB) DS - - - 1.5V • •

1-16 Chapter 1: Product introduction

DDR3-1600 MHz capability

Vendors Part No. Size

SS/DSChip

Brand

Chip NO. Timing Voltage

DIMM socket

support (Optional) 1 DIMM 2 DIMMs

A-DATA AM2U16BC2P1 2GB SS A-DATA

3CCD-1509 A EL1126T

- - • •

A-DATA AD31600E001GM(O)U3K 3GB(3 x 1GB) SS - - 8-8-8-24 1.65V-1.85V • •

A-DATA AM2U16BC4P2 4GB DS A-DATA

3CCD-1509 A EL1126T

- - • •

A-DATA AX3U1600GC4G9-2G(XMP) 8GB(2 x 4GB) DS - - 9-9-9-24 1.55V-1.75V • • A-DATA AX3U1600XC4G79-2X(XMP) 8GB(2 x 4GB) DS - - 7-9-7-21 1.55V-1.75V • CORSAIR TR3X3G1600C8D(XMP) 3GB(3 x 1GB) SS - - 8-8-8-24 1.65V • • CORSAIR CMD12GX3M6A1600C8(XMP) 12GB(6x2GB) DS - - 8-8-8-24 1.65V • • CORSAIR CMP4GX3M2A1600C8(XMP) 4GB(2 x 2GB) DS - - 8-8-8-24 1.65V • • CORSAIR CMP4GX3M2A1600C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V • • CORSAIR CMP4GX3M2C1600C7(XMP) 4GB(2 x 2GB) DS - - 7-8-7-20 1.65V • • CORSAIR CMX4GX3M2A1600C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V • • CORSAIR TR3X6G1600C8 G(XMP) 6GB(3 x 2GB) DS - - 8-8-8-24 1.65V • • CORSAIR TR3X6G1600C8D G(XMP) 6GB(3 x 2GB) DS - - 8-8-8-24 1.65V • • CORSAIR TR3X6G1600C9 G(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.65V • • CORSAIR CMP8GX3M2A1600C9(XMP) 8GB(2 x 4GB) DS - - 9-9-9-24 1.65V • • CORSAIR CMZ8GX3M2A1600C7R(XMP) 8GB(2 x 4GB) DS - - 7-8-7-20 1.50V • • CORSAIR CMX8GX3M4A1600C9(XMP) 8GB(4 x 2GB) DS - - 9-9-9-24 1.65V • • Crucial BL25664BN1608.16FF(XMP) 6GB(3 x 2GB) DS - - - - • • G.SKILL F3-12800CL9D-2GBNQ(XMP) 2GB(2 x 1GB) SS - - 9-9-9-24 1.5V • • G.SKILL F3-12800CL7D-4GBRH(XMP) 4GB(2 x 2GB) SS - - 7-7-7-24 1.6V • • G.SKILL F3-12800CL7D-4GBRM(XMP) 4GB(2 x 2GB) DS - - 7-8-7-24 1.6V • • G.SKILL F3-12800CL8D-4GBRM(XMP) 4GB(2 x 2GB) DS - - 8-8-8-24 1.60V • • G.SKILL F3-12800CL9D-4GBECO(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 XMP 1.35V • • G.SKILL F3-12800CL9D-4GBRL(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.5V • • G.SKILL F3-12800CL9T-6GBNQ(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.5V~1.6V • • G.SKILL F3-12800CL7D-8GBRH(XMP) 8GB(2 x 4GB) DS - - 7-8-7-24 1.6V • • G.SKILL F3-12800CL8D-8GBECO(XMP) 8GB(2 x 4GB) DS - - 8-8-8-24 XMP 1.35V • • G.SKILL F3-12800CL9D-8GBRL(XMP) 8GB(2 x 4GB) DS - - 9-9-9-24 1.5V • •

GEIL GET316GB1600C9QC(XMP)

16GB ( 4x 4GB )

DS - - 9-9-9-28 1.6V •

GEIL GV34GB1600C8DC(XMP) 2GB DS - - 8-8-8-28 1.6V •

HYNIX HMT351U6CFR8C-PB 4GB DS HYNIX

H5TQ2G83 CFR PBC

- - • •

KINGMAX FLGD45F-B8MF7 MAEH(XMP) 1GB SS - - 7 - • • KINGMAX FLGE85F-B8KJ9A FEIS(XMP) 2GB DS - - - - • • KINGMAX FLGE85F-B8MF7 MEEH(XMP) 2GB DS - - 7 - • • KINGSTON KHX1600C9D3P1K2/4G 4GB(2 x 2GB) SS - - - 1.5V • KINGSTON KHX1600C9D3K3/12GX(XMP) 12GB(3x4GB) DS - - 9-9-9-27 1.65V • •

KINGSTON KHX1600C9D3K4/16GX(XMP)

16GB ( 4GB x4 )

DS - - - 1.65V • •

KINGSTON KHX1600C9AD3/2G 2GB DS - - - 1.65V • •

KINGSTON KVR1600D3N11/2G-ES 2GB DS KTC

D1288JPN DPLD9U

11-11-11-28 1.35V-1.5V • •

KINGSTON KHX1600C7D3K2/4GX(XMP) 4GB ( 2x 2GB ) DS - - - 1.65V • • KINGSTON KHX1600C8D3K2/4GX(XMP) 4GB(2 x 2GB) DS - - 8 1.65V • • KINGSTON KHX1600C8D3T1K2/4GX(XMP) 4GB(2 x 2GB) DS - - 8 1.65V • KINGSTON KHX1600C9D3K2/4GX(XMP) 4GB(2 x 2GB) DS - - 9 1.65V • • KINGSTON KHX1600C9D3LK2/4GX(XMP) 4GB(2 x 2GB) DS - - 9 XMP 1.35V • • KINGSTON KHX1600C9D3X2K2/4GX(XMP) 4GB(2 x 2GB) DS - - 9-9-9-27 1.65V • • KINGSTON KHX1600C9D3T1K3/6GX(XMP) 6GB ( 3x 2GB ) DS - - - 1.65V • • KINGSTON KHX1600C9D3K3/6GX(XMP) 6GB(3 x 2GB) DS - - 9 1.65V • • KINGSTON KHX1600C9D3T1BK3/6GX(XMP) 6GB(3 x 2GB) DS - - 9-9-9-27 1.65V • • KINGSTON KHX1600C9D3K2/8GX(XMP) 8GB(2 x 4GB) DS - - 9-9-9-27 1.65V • • KINGSTON KHX1600C9D3P1K2/8G 8GB(2 x 4GB) DS - - - 1.5V • Super Talent WA160UX6G9 6GB(3 x 2GB) DS - - 9 - • Transcend JM1600KLN-8GK 8GB(4GBx2) DS Transcend TK483PCW3 - - • Asint SLZ3128M8-EGJ1D(XMP) 2GB DS Asint 3128M8-GJ1D 9-9-9-24 1.6V • • Asint SLA302G08-EGG1C(XMP) 4GB DS Asint 302G08-GG1C - - • • Asint SLA302G08-EGJ1C(XMP) 4GB DS Asint 302G08-GJ1C - - • • Elixir M2P2G64CB8HC9N-DG(XMP) 2GB DS - - - - • • Mushkin 998659(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 - • • Mushkin 998659(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.5~1.6V • • PATRIOT PGS34G1600LLKA 4GB(2 x 2GB) DS - - 7-7-7-20 1.7V • •

ASUS P8B75-M LX 1-17

(continued on the next page)

DDR3-1333 MHz capability

Vendors Part No. Size

SS/ DS

Chip Brand Chip NO. Timing Voltage

DIMM socket

support (Optional) 1 DIMM 2 DIMMs

A-DATA AD31333001GOU 1GB SS A-Data AD30908C8D-151C E0906 - - • A-DATA AD3U1333C2G9 2GB SS A-DATA 3CCD-1509HNA1126L - - • • A-DATA AD63I1B0823EV 2GB SS A-Data 3CCA-1509A - - • • A-DATA AM2U139C2P1 2GB SS ADATA 3CCD-1509A EL1127T - - • • A-DATA AX3U1333C2G9-BP 2GB SS - - - - • • A-DATA AD31333G001GOU 3GB(3 x 1GB) SS - - 8-8-8-24 1.65-1.85V • •

A-DATA

AXDU1333GC2 G9-2G(XMP)

4GB(2 x 2GB) SS - - 9-9-9-24

1.25V-1.35V (low voltage)

•

A-DATA AD31333G002GMU 2GB DS - - 8-8-8-24 1.65-1.85V • • A-DATA AD63I1C1624EV 4GB DS A-Data 3CCA-1509A - - • • A-DATA AM2U139C4P2 4GB DS ADATA 3CCD-1509A EL1127T - - • • A-DATA SU3U1333W8G9-B 8GB DS ELPIDA J4208BASE-DJ-F - - • • Apacer 78.A1GC6.9L1 2GB DS Apacer AM5D5808DEWSBG - - • • Apacer 78.A1GC6.9L1 2GB DS Apacer AM5D5808FEQSBG 9 - • • Apacer AU02GFA33C9NBGC 2GB DS Apacer AM5D5808APQSBG - - • • Apacer 78.B1GDE.9L10C 4GB DS Apacer AM5D5908CEHSBG - - • • CORSAIR TR3X3G1333C9 G 3GB(3 x 1GB) SS - - 9-9-9-24 1.50V • • CORSAIR TR3X6G1333C9 G 6GB(3 x 2GB) SS - - 9-9-9-24 1.50V • •

CORSAIR

CMD24GX3M6A 1333C9(XMP)

24GB(6 x 4GB) DS - - 9-9-9-24 1.60V • •

CORSAIR TW3X4G1333C9D G 4GB(2 x 2GB) DS - - 9-9-9-24 1.50V • • CORSAIR CM3X4GA1333C9N2 4GB DS CORSAIR 256MBDCJGELC0401136 9-9-9-24 - • • CORSAIR CMX4GX3M1A1333C9 4GB DS - - 9-9-9-24 1.50V • • CORSAIR CMD8GX3M4A1333C7 8GB(4 x 2GB) DS - - 7-7-7-20 1.60V • • Crucial CT12864BA1339.8FF 1GB SS Micron 9FF22D9KPT 9 - • • Crucial CT25664BA1339.16FF 2GB DS Micron 9KF27D9KPT 9 - • •

Crucial

BL25664BN

1337.16FF (XMP)

6GB(3 x 2GB) DS - - 7-7-7-24 1.65V • •

ELPIDA EBJ10UE8EDF0-DJ-F 1GB SS ELPIDA J1108EDSE-DJ-F -

1.35V(low voltage)

• •

ELPIDA EBJ21UE8EDF0-DJ-F 2GB DS ELPIDA J1108EDSE-DJ-F -

1.35V(low voltage)

• •

G.SKILL

F3-10600CL8 D-2GBHK(XMP)

1GB SS G.SKILL - - - • •

G.SKILL

F3-10600CL9 D-2GBNQ

2GB(2 x 1GB) SS - - 9-9-9-24 1.5V • •

G.SKILL

F3-10666CL7 T-3GBPK(XMP)

3GB(3 x 1GB) SS - - 7-7-7-18 1.5~1.6V • •

G.SKILL

F3-10666CL8 D-4GBECO(XMP)

4GB(2 x 2GB) DS - - 8-8-8-8-24 XMP 1.35V • •

G.SKILL

F3-10666CL7 T-6GBPK(XMP)

6GB(3 x 2GB) DS - - 7-7-7-18 1.5~1.6V • •

G.SKILL

F3-10666CL7 D-8GBRH(XMP)

8GB(2 x 4GB) DS - - 7-7-7-21 1.5V • •

GEIL GV32GB1333C9DC 2GB(2 x 1GB) DS - - 9-9-9-24 1.5V • •

GEIL GG34GB1333C9DC 4GB(2 x 2GB) DS GEIL GL1L128M88BA12N 9-9-9-24

1.3V(low voltage)

• •

GEIL GV34GB1333C9DC 4GB(2 x 2GB) DS - - 9-9-9-24 1.5V • • GEIL GVP34GB1333C7DC 4GB(2 x 2GB) DS - - 7-7-7-24 1.5V • •

Hynix HMT112U6TFR8A-H9 1GB SS Hynix H5TC1G83TFRH9A -

1.35V(low voltage)

• •

Hynix HMT325U6BFR8C-H9 2GB SS Hynix H5TQ2G83BFRH9C - - • •

Hynix HMT125U6TFR8A-H9 2GB DS Hynix H5TC1G83TFRH9A -

1.35V(low voltage)

• •

Hynix HMT351U6BFR8C-H9 4GB DS Hynix H5TQ2G83BFRH9C - - • • KINGMAX FLFD45F-B8KL9 NAES 1GB SS KINGMAX KKB8FNWBFGNX-27A - - • • KINGMAX FLFE85F-C8KF9 CAES 2GB SS KINGMAX KFC8FMFXF-DXX-15A - - • • KINGMAX FLFE85F-C8KL9 NAES 2GB SS KINGMAX KFC8FNLXF-DXX-15A - - • • KINGMAX FLFE85F-C8KM9 NAES 2GB SS KINGMAX KFC8FNMXF-BXX-15A - - • • KINGMAX FLFE85F-B8KL9 NEES 2GB DS KINGMAX KKB8FNWBFGNX-26A - - • • KINGMAX FLFF65F-C8KL9 NEES 4GB DS KINGMAX KFC8FNLXF-DXX-15A - - • • KINGMAX FLFF65F-C8KM9 NEES 4GB DS KINGMAX KFC8FNMXF-BXX-15A - - • •

KINGSTON

KVR1333D3N

9/1G(low prole)

1GB SS ELPIDA J1108BDBG-DJ-F 9 1.5V • •

KINGSTON

KVR1333D3N

9/2G(low prole)

2GB SS Hynix H5TQ2G83AFRH9C 9 - •

KINGSTON KVR1333D3S8N9/2G 2GB SS Micron IID77 D9LGK - 1.5V • •

KINGSTON

KVR1333D3S8

N9/2G-SP(low prole)

2GB SS ELPIDA J2108BCSE-DJ-F - 1.5V • •

KINGSTON

KVR1333D3N9/

2G(low prole)

2GB DS ELPIDA J1108BFBG-DJ-F 9 1.5V • •

KINGSTON KVR1333D3N9/2G 2GB DS KTC D1288JPNDPLD9U 9 1.5V • •

1-18 Chapter 1: Product introduction

Vendors Part No. Size

SS/ DS

Chip Brand Chip NO. Timing Voltage

DIMM socket

support (Optional) 1 DIMM 2 DIMMs

KINGSTON KVR1333D3N9/2G 2GB DS ELPIDA J1108BDSE-DJ-F 9 1.5V • •

KINGSTON

KVR1333D3N9/2G-

SP(low prole)

2GB DS KTC D1288JEMFNGD9U - 1.5V • •

KINGSTON

KVR1333D3N9

/2G-SP(low prole)

2GB DS KINGSTON D1288JPSFPGD9U - 1.5V • •

KINGSTON

KHX1333C7D3 K2/4GX(XMP)

4GB(2 x 2GB) DS - - 7 1.65V • •

KINGSTON

KHX1333C9D3 UK2/4GX(XMP)

4GB(2 x 2GB) DS - - 9 XMP 1.25V •

KINGSTON

KVR1333D3N

9/4G(low prole)

4GB DS ELPIDA J2108BCSE-DJ-F 9 1.5V • •

KINGSTON

KVR1333D3N

9/4G(low prole)

4GB DS ELPIDA J2108BCSE-DJ-F - 1.5V • •

KINGSTON KVR1333D3N9/4G 4GB DS KTC D2568JENCNGD9U - 1.5V • • KINGSTON KVR1333D3N9/4G 4GB DS Hynix H5TQ2G83AFR - - • •

KINGSTON

KVR1333D3N9/

4G-SP(low prole)

4GB DS KINGSTON D2568JENCPGD9U - 1.5V • •

Micron MT4JTF12864AZ-1G4D1 1GB SS Micron OJD12D9LGQ - - • • Micron MT8JTF12864AZ-1G4F1 1GB SS Micron 9FF22D9KPT 9 - • • Micron MT8JTF25664AZ-1G4D1 2GB SS Micron OJD12D9LGK - - • • Micron MT8JTF25664AZ-1G4M1 2GB SS MICRON IJM22 D9PFJ - - • •

Micron

MT16JTF25664AZ1G4F1

2GB DS Micron 9KF27D9KPT 9 - • •

Micron

MT16JTF51264AZ1G4D1

4GB DS Micron OLD22D9LGK - - • •

NANYA NT4GC64B8HG0NF-CG 4GB DS NANYA NT5CB256M8GN-CG - - • • PSC AL7F8G73F-DJ2 1GB SS PSC A3P1GF3FGF - - • • PSC AL8F8G73F-DJ2 2GB DS PSC A3P1GF3FGF - - • • SAMSUNG M378B2873FHS-CH9 1GB SS SAMSUNG K4B1G0846F - - • • SAMSUNG M378B5773DH0-CH9 2GB SS SAMSUNG K4B2G0846D - - • • SAMSUNG M378B5673FH0-CH9 2GB DS SAMSUNG K4B1G0846F - - • • SAMSUNG M378B5273CH0-CH9 4GB DS SAMSUNG K4B2G0846C - - • • SAMSUNG M378B1G73AH0-CH9 8GB DS SAMSUNG K4B4G0846A-HCH9 - - • • Super Talent W1333UA1GH 1GB SS Hynix H5TQ1G83TFR 9 - • • Super Talent W1333UB2GS 2GB DS SAMSUNG K4B1G0846F 9 - • • Super Talent W1333UB4GS 4GB DS SAMSUNG K4B2G0846C - - • • Super Talent W1333UX6GM 6GB(3x 2GB) DS Micron 0BF27D9KPT 9-9-9-24 1.5V • • Transcend JM1333KLN-2G 2GB SS Hynix H5TQ2G83BZRH9C - - • •

Century

PC3-10600 DDR3-1333 9-9-9

1GB SS NANYA NT5CB128M8DN-CF - - • •

Elixir M2F2G64CB88B7N-CG 2GB SS Elixir N2CB2G80BN-CG - - • • Elixir M2F2G64CB88D7N-CG 2GB SS Elixir N2CB2G80DN-CG - - • • Elixir M2F2G64CB88G7N-CG 2GB SS Elixir N2CB2G80GN-CG - - • • Elixir M2F4G64CB8HB5N-CG 4GB DS Elixir N2CB2G80BN-CG - - • • Elixir M2F4G64CB8HD5N-CG 4GB DS Elixir N2CB2G80DN-CG - - • • KINGSHARE KSRPCD313332G 2GB DS PATRIOT PM128M8D385-15 - - • • KINGSTEK KSTD3PC-10600 2GB SS MICRON PE911-125E - - • •

Kingtiger 2GB DIMM PC3-10666 2GB DS SAMSUNG

SEC 904 HCH9 K4B1G0846D

- - • •

Kingtiger KTG2G1333PG3 2GB DS - - - - • •

MARKVISION

BMD32048M1333C91123

2GB DS MARKVISION M3D1288P-13 - - • •

MARKVISION

BMD34096M1333C91124

4GB DS MARKVISION M3D2568E-13 - - • •

PATRIOT PSD31G13332H 1GB DS - - 9 - • • PATRIOT PSD31G13332 1GB DS PATRIOT PM64M8D38U-15 - - • • PATRIOT PSD32G13332H 2GB DS - - - - • • PATRIOT PG38G1333EL(XMP) 8GB DS - - 9-9-9-24 1.5V • • RAMAXEL RMR1870ED48E8F-1333 2GB DS ELPIDA J1108BDBG-DJ-F - - • • RAMAXEL RMR1870EC58E9F-1333 4GB DS ELPIDA J2108BCSE-DJ-F - - • • RiDATA C304627CB1AG22Fe 2GB DS RiDATA N/A 9 - • • RiDATA E304459CB1AG32Cf 4GB DS RiDATA N/A 9 - • • SILICON

POWER

SP001GBLTU133S01 1GB SS NANYA NT5CB128M8AN-CG 9 - • •

SILICON POWER

SP001GBLTU133S02 1GB SS Elixir N2CB1680AN-C6 9 - • •

SILICON POWER

SP002GBLTU133S02 2GB DS Elixir N2CB1680AN-C6 9 - • •

TAKEMS

TMS1GB364D081107EY

1GB SS - - 7-7-7-20 1.5V • •

TAKEMS

TMS2GB364D081107EY

2GB DS - - 7-7-7-20 1.5V • •

TAKEMS

TMS2GB364D081138EY

2GB DS - - 8-8-8-24 1.5V •

TAKEMS

TMS2GB364D082138EW

2GB DS - - 8-8-8-24 1.5V • •

UMAX E41302GP0-73BDB 2GB DS UMAX U2S24D30TP-13 - - • • WINTEC 3WVS31333-2G-CNR 2GB DS AMPO AM3420803-13H - - • •

DDR3-1066 MHz capability

ASUS P8B75-M LX 1-19

DDR3-1066 MHz capability

Side(s): SS - Single-sided DS - Double-sided

DIMM support:

• 1 DIMM: Supports one (1) module inserted into any slot as Single-channel memory

conguration. We suggest that you install the module into A1 slot.

• 2 DIMMs: Supports two (2) modules inserted into the blue slots and the black slots as

one pair of Dual-channel memory conguration.

Visit the ASUS website at www.asus.com for the latest QVL.

Vendors Part No. Size

SS/DSChip

Brand

Chip NO. Timing Voltage

DIMM socket

support (Optional)

1 DIMM 2 DIMMs

Crucial CT12864BA1067.8FF 1GB SS Micron 9GF22D9KPT 7 - • • Crucial CT25664BA1067.16FF 2GB DS Micron 9HF22D9KPT 7 - • • ELPIDA EBJ10UE8EDF0-AE-F 1GB SS ELPIDA J1108EDSE-DJ-F - 1.35V(low voltage) • • ELPIDA EBJ21UE8EDF0-AE-F 2GB DS ELPIDA J1108EDSE-DJ-F - 1.35V(low voltage) • •

KINGSTON

KVR1066D3N7/1G(low

prole)

1GB SS ELPIDA J1108BFSE-DJ-F 7 1.5V • •

KINGSTON KVR1066D3N7/2G 2GB DS ELPIDA J1108BDSE-DJ-F 7 1.5V • • KINGSTON KVR1066D3N7/4G 4GB DS Hynix H5TQ2G83AFR 7 1.5V • • Micron MT8JTF12864AZ-1G1F1 1GB SS Micron 9GF22D9KPT 7 - • • Micron MT16JTF25664AZ-1G1F1 2GB DS Micron 9HF22D9KPT 7 - • • Kingtiger 2GB DIMM PC3-8500 2GB DS Hynix H5TQ1G83AFP G7C - - • •

1-20 Chapter 1: Product introduction

1.7.3 Installing a DIMM

Unplug the power supply before adding or removing DIMMs or other system components. Failure to do so can cause severe damage to both the motherboard and the components.

1. Press the retaining clips outward to unlock a DIMM socket.

2. Align a DIMM on the socket such that the notch on the DIMM matches the DIMM slot key on the socket.

A DIMM is keyed with a notch so that it ts in only one direction. DO NOT force a DIMM into

a socket in the wrong direction to avoid damaging the DIMM.

3. Firmly insert the DIMM into the socket until the retaining clips snap back in place and the DIMM is properly seated.

Locked Retaining Clip

1.7.4 Removing a DIMM

To remove a DIMM:

1. Simultaneously press the retaining clips outward to unlock the DIMM.

2. Remove the DIMM from the socket.

Support the DIMM lightly with your

ngers when pressing the retaining

clips. The DIMM might get damaged

when it ips out with extra force.

DIMM notch

Unlocked retaining clip

DIMM notch

DIMM slot key

ASUS P8B75-M LX 1-21

1.8 Expansion slots

In the future, you may need to install expansion cards. The following sub-sections describe the slots and the expansion cards that they support.

Unplug the power cord before adding or removing expansion cards. Failure to do so may cause you physical injury and damage motherboard components.

1.8.1 Installing an expansion card

To install an expansion card:

1. Before installing the expansion card, read the documentation that came with it and make the necessary hardware settings for the card.

2. Remove the system unit cover (if your motherboard is already installed in a chassis).

3. Remove the bracket opposite the slot that you intend to use. Keep the screw for later use.

4. Align the card connector with the slot and press rmly until the card is completely

seated on the slot.

5. Secure the card to the chassis with the screw you removed earlier.

6. Replace the system cover.

1.8.2 Conguring an expansion card

After installing the expansion card, congure it by adjusting the software settings.

1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for information on BIOS setup.

2. Assign an IRQ to the card.

3. Install the software drivers for the expansion card.

When using PCI cards on shared slots, ensure that the drivers support “Share IRQ” or that

the cards do not need IRQ assignments. Otherwise, conicts will arise between the two PCI

groups, making the system unstable and the card inoperable.

1.8.3 PCI slot

The PCI slot supports card such as a LAN card, SCSI card, USB card, and other cards that

comply with PCI specications.

1.8.4 PCI Express 2.0 x1 slots

This motherboard supports PCI Express 2.0 x1 network cards, SCSI cards, and other cards

that comply with the PCI Express specications.

1.8.5 PCI Express 3.0/2.0 x16 slot

This motherboard has a PCI Express 3.0/2.0 x16 slot that supports PCI Express 3.0/2.0 x16

graphic cards complying with the PCI Express specications.

1-22 Chapter 1: Product introduction

IRQ assignments for this motherboard

A B C D E F G H

Intel PCH SATA controller #0 – – – shared – – – –

Intel PCH SATA controller #1 – – – shared – – – –

Realtek 8111F controller shared – – – – – – –

1.9 Jumpers

1. Clear RTC RAM (3-pin CLRTC)

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can clear the CMOS memory of date, time, and system setup parameters by erasing the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in CMOS, which include system setup information such as system passwords.

Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default position. Removing the cap will cause system boot failure!

• If the steps above do not help, remove the onboard battery and move the jumper again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.

• You do not need to clear the RTC when the system hangs due to overclocking. For system failure due to overclocking, use the CPU Parameter Recall (C.P.R.) feature. Shut down and reboot the system, then the BIOS automatically resets parameter settings to default values.

To erase the RTC RAM:

1. Turn OFF the computer and unplug the power cord.

2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3 for about 5-10 seconds, then move the cap back to pins 1-2.

3. Plug the power cord and turn ON the computer.

4. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter data.

P8B75-M LX

P8B75-M LX Clear RTC RAM

1 2 2 3

Normal

(Default)

Clear RTC

CLRTC

ASUS P8B75-M LX 1-23

1.10 Connectors

1.10.1 Rear panel connectors

1. PS/2 Mouse port (green). This port is for a PS/2 mouse.

2. LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN)

through a network hub. Refer to the table below for the LAN port LED indications.

LAN port LED indications

LAN port

Speed

LED

Activity Link

LED

ACT/LINK LED SPEED LED

Status Description Status Description

OFF No link OFF 10 Mbps connection

ORANGE Linked ORANGE 100 Mbps connection

BLINKING Data activity GREEN 1 Gbps connection

3. Line In port (light blue). This port connects the tape, CD, DVD player, or other audio

sources.

4. Line Out port (lime). This port connects to a headphone or a speaker. In 4-channel,

6-channel, and 8-channel congurations, the function of this port becomes Front

Speaker Out.

5. Microphone port (pink). This port connects a microphone.

Refer to the audio conguration table below for the function of the audio ports in the 2, 4, 6, or 8-channel conguration.

Audio 2, 4, 6, 8-channel conguration

Port Headset 2-channel 4-channel 6-channel 8-channel

Light Blue (Rear panel) Line In Rear Speaker Out Rear Speaker Out Rear Speaker Out

Lime (Rear panel) Line Out Front Speaker Out Front Speaker Out Front Speaker Out

Pink (Rear panel) Mic In Mic In Bass/Center Bass/Center

Lime (Front panel) - - - Side Speaker Out

To congure an 8-channel audio output:

Use a chassis with HD audio module in the front panel to support an 8-channel audio output.

9 8

3 4

1-24 Chapter 1: Product introduction

6. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are

available for connecting USB 2.0/1.1 devices.

7. USB 3.0 ports 1 and 2. These two 9-pin Universal Serial Bus (USB) ports connect to

USB 3.0/2.0 devices.

• DO NOT connect a keyboard / mouse to any USB 3.0 port when installing Windows

operating system.

• Due to USB 3.0 controller limitation, USB 3.0 devices can only be used under Windows

OS environment and after the USB 3.0 driver installation.

• USB 3.0 devices can only be used as data storage only.

• We strongly recommend that you connect USB 3.0 devices to USB 3.0 ports for faster and better performance for your USB 3.0 devices.

8. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other

VGA-compatible devices.

9. DVI-D port. This port is for any DVI-D compatible device. DVI-D can’t be converted to

output RGB Signal to CRT and isn’t compatible with DVI-I.

10. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are

available for connecting USB 2.0/1.1 devices.

ASUS P8B75-M LX 1-25

1.10.2 Internal connectors

1. Front panel audio connector (10-1 pin AAFP)

This connector is for a chassis-mounted front panel audio I/O module that supports either HD Audio or legacy AC`97 audio standard. Connect one end of the front panel audio I/O module cable to this connector.

• We recommend that you connect a high-denition front panel audio module to this connector to avail of the motherboard’s high-denition audio capability.

• If you want to connect a high-denition front panel audio module to this connector, set the Front Panel Type item in the BIOS setup to [HD]. If you want to connect an AC'97 front panel audio module to this connector, set the item to [AC97]. By default, this connector is set to [HD]. See section 2.5.7 Onboard Devices Conguration for details.

2. Digital audio connector (4-1 pin SPDIF_OUT)

This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port. Connect the S/PDIF Out module cable to this connector, then install the module to a slot opening at the back of the system chassis.

The S/PDIF module is purchased separately.

P8B75-M LX

P8B75-M LX Front panel audio connector

AAFP

PIN 1

AGNDNCSENSE1_RETUR

SENSE2_RETUR

PORT1 L

PORT1 R

PORT2 R

SENSE_SEND

PORT2 L

HD-audio-compliant

pin definition

PIN 1

AGNDNCNC

MIC2

MICPWR

Line out_R

Line out_L

Legacy AC’97

compliant definition

P8B75-M LX

P8B75-M LX Digital audio connector

SPDIF_OUT

+5V

SPDIFOUT

GND

1-26 Chapter 1: Product introduction

• For a fully congured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12 V Specication 2.0 (or later version) and provides a minimum

power of 350 W.

• DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will not boot up.

• We recommend that you use a PSU with higher power output when conguring a

system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate.

•

If you are uncertain about the minimum power supply requirement for your system, refer to the Recommended Power Supply Wattage Calculator at http://support.asus. com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.

3. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)

These connectors are for ATX power supply plugs. The power supply plugs are

designed to t these connectors in only one orientation. Find the proper orientation and push down rmly until the connectors completely t.

P8B75-M LX

P8B75-M LX ATX power connectors

EATXPWR

PIN 1

GND +5 Volts +5 Volts +5 Volts

-5 Volts GND GND GND PSON# GND

-12 Volts +3 Volts

+3 Volts +12 Volts +12 Volts

+5V Standby

Power OK

GND

+5 Volts

GND

+5 Volts

GND +3 Volts +3 Volts

EATX12V

+12V DC

GND

4. Serial port connector (10-1 pin COM1)

This connector is for a serial (COM) port. Connect the serial port module cable to this connector, then install the module to a slot opening at the back of the system chassis.

The COM module is purchased separately.

P8B75-M LX

P8B75-M LX Serial port (COM1) connector

PIN 1

COM1

DCD

TXD

GND

RTS

RXD

DTR

DSR

CTS

ASUS P8B75-M LX 1-27

Do not forget to connect the fan cables to the fan connectors. Insufcient air ow inside the

system may damage the motherboard components. These are not jumpers! Do not place jumper caps on the fan connectors!

5. CPU and chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN)

Connect the fan cables to the fan connectors on the motherboard, ensuring that the black wire of each cable matches the ground pin of the connector.

• The CPU_FAN connector supports a CPU fan of maximum 2A (24 W) fan power.

• Only the 4-pin CPU fan supports the ASUS Fan Xpert feature.

6. LPT connector (26-1 pin LPT)

The LPT (Line Printing Terminal) connector supports devices such as a printer. LPT is

standardized as IEEE 1284, which is the parallel port interface on IBM PC-compatible

computers.

CHA_FAN

P8B75-M LX

P8B75-M LX fan connectors

GND CHA FAN PWR CHA FAN IN

CPU_FAN

CPU FAN PWM

CPU FAN IN

+12V

GND

P8B75-M LX

P8B75-M LX Parallel Port Connector

LPT

PIN 1

SLCTPEBUSY

ACK#

PD7

PD6

PD5

PD4

PD3

PD2

PD1

PD0

STB#

GND

SLIN#

INIT#

ERR#

AFD

1-28 Chapter 1: Product introduction

7. System panel connector (10-1 pin F_PANEL)

This connector supports several chassis-mounted functions.

• System power LED (2-pin PLED)

This 2-pin connector is for the system power LED. Connect the chassis power LED cable to this connector. The system power LED lights up when you turn on the system power, and blinks when the system is in sleep mode.

•

Hard disk drive activity LED (2-pin +HDLED)

This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable

to this connector. The IDE LED lights up or ashes when data is read from or written to

the HDD.

•

ATX power button/soft-off button (2-pin PWRBTN)

This 2-pin connector is for the system power button.

•

Reset button (2-pin RESET)

This 2-pin connector is for the chassis-mounted reset button for system reboot without turning off the system power.

8. Speaker connector (4-pin SPEAKER)

The 4-pin connector is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings.

P8B75-M LX

P8B75-M LX System panel connector

PIN 1

PWR BTN

PLED+

PLED-

PWR

GND

HD_LED+

HD_LED-

Ground

Reset

F_PANEL

PWR LED

+HD_LED RESET

P8B75-M LX

P8B75-M LX Speaker Out Connector

+5V

GND

Speaker Out

SPEAKER

PIN 1

ASUS P8B75-M LX 1-29

9. Intel® B75 Serial ATA 3.0Gb/s connectors (7-pin SATA3G_1~5 [blue])

These connectors connect to Serial ATA 3.0 Gb/s hard disk drives and optical drives via Serial ATA 3.0 Gb/s signal cables.

• You must install Windows® XP Service Pack 3 or later version before using Serial ATA hard disk drives.

• When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to [AHCI]. See section 2.5.3 SATA Conguration for details.

10. Intel® B75 Serial ATA 6.0Gb/s connectors (7-pin SATA6G_1 [gray])

These connectors connect to Serial ATA 6.0 Gb/s hard disk drives via Serial ATA 6.0 Gb/s signal cables.

• You must install Windows® XP Service Pack 3 or later version before using Serial ATA hard disk drives.

• When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to [AHCI]. See section 2.5.3 SATA Conguration for details.

SATA3G_2

GND

RSATA_RXP2

RSATA_RXN2

GND

RSATA_TXN2

RSATA_TXP2

GND

SATA3G_5

GND

RSATA_RXP5

RSATA_RXN5

GND

RSATA_TXN5

RSATA_TXP5

GND

SATA3G_1

GND

RSATA_TXP1

RSATA_TXN1

GND

RSATA_RXN1

RSATA_RXP1

GND

SATA3G_3

GND

RSATA_TXP3

RSATA_TXN3

GND

RSATA_RXN3

RSATA_RXP3

GND

SATA3G_4

GND

RSATA_TXP4

RSATA_TXN4

GND

RSATA_RXN4

RSATA_RXP4

GND

P8B75-M LX

P8B75-M LX Intel® SATA 3.0Gb/s connectors

SATA6G_1

GND

RSATA_RXP1

RSATA_RXN1

GND

RSATA_TXN1

RSATA_TXP1

GND

P8B75-M LX

P8B75-M LX Intel® SATA 6.0Gb/s connectors

1-30 Chapter 1: Product introduction

11. USB 3.0 connector (20-1 pin USB3_34)

This connector is for the additional USB 3.0 ports. Connect the USB 3.0 bracket cable to this connector, then install the USB 3.0 bracket to the rear side of the chassis. If your

chassis support customized front panel installation, with ASUS USB 3.0 header, you

can have a front panel USB 3.0 solution.

The USB 3.0 module is purchased separately.

12. USB 2.0 connectors (10-1 pin USB56, USB78)

These connectors are for USB 2.0 ports. Connect the USB module cable to any of these connectors, then install the module to a slot opening at the back of the system

chassis. These USB connectors comply with USB 2.0 specication that supports up to

480 Mbps connection speed.

Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!

The USB module cable is purchased separately.

P8B75-M LX

P8B75-M LX USB3.0 Front panel connector

USB3_34

P8B75-M LX

P8B75-M LX USB2.0 connector

PIN 1

USB+5V

USB_P8-

USB_P8+

GND

USB+5V

USB_P7-

USB_P7+

GND

USB78

PIN 1

USB+5V

USB_P6-

USB_P6+

GND

USB+5V

USB_P5-

USB_P5+

GND

USB56

ASUS P8B75-M LX 1-31

13. Chassis intrusion connector (4-1 pin CHASSIS)

This connector is for a chassis-mounted intrusion detection sensor or switch. Connect one end of the chassis intrusion sensor or switch cable to this connector. The chassis intrusion sensor or switch sends a high-level signal to this connector when a chassis component is removed or replaced. The signal is then generated as a chassis intrusion event.

By default, the pin labeled “Chassis Signal” and “Ground” are shorted with a jumper cap. Remove the jumper caps only when you intend to use the chassis intrusion detection feature.

P8B75-M LX

P8B75-M LX Chassis intrusion connector

+5VSB_MB

Chassis Signal

GND

CHASSIS

1.11 Onboard LEDs

1. Standby Power LED

The motherboard comes with a standby power LED that lights up to indicate that the system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down the system and unplug the power cable before removing or plugging in any motherboard component. The illustration below shows the location of the onboard LED.

SB_PWR

Standby Power Powered Off

OFF

P8B75-M LX

P8B75-M LX Onboard LED

1-32 Chapter 1: Product introduction

1.13 Software support

1.13.1 Installing an operating system

This motherboard supports Windows® XP / Vista / 7 Operating Systems (OS). Always install

the latest OS version and corresponding updates to maximize the features of your hardware.

• Motherboard settings and hardware options vary. Refer to your OS documentation for detailed information.

• Ensure that you install Windows® XP Service Pack 3 or later versions / Windows® Vista Service Pack 1 or later versions before installing the drivers for better compatibility and system stability.

1.13.2 Support DVD information

The Support DVD that comes with the motherboard package contains the drivers, software applications, and utilities that you can install to avail all motherboard features.

If Autorun is NOT enabled in your computer, browse the contents of the Support DVD to

locate the le ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run

the DVD.

The following screen is for reference only.

The contents of the Support DVD are subject to change at any time without notice. Visit the ASUS website at www.asus.com for updates.

To run the Support DVD

Place the Support DVD to the optical drive. If Autorun is enabled in your computer, the DVD automatically displays the Specials screen. Click Drivers, Utilities, Manual, Contact, and Specials tabs to display their respective menus.

Click an item to install

Click an icon to display Support DVD/ motherboard information

ASUS P8B75-M LX 1-33

1.13.3 Intel® SBA support

Intel® SBA (Small Business Advantage) is a combination of hardware and software that provides unique security and productivity capabilities designed for small businesses.

Intel® SBA requires MEI driver (AMT host software kit) installed.

Platform requirements:

• Windows® 7 (32/64bit)

• Panther Point PCH with Core™ Ivy Bridge CPU or Sandy Bridge CPU (Chief River/

Maho Bay platforms) with 5MB vPro ME 8.0 rmware load

CPU and chipsets requirements:

* Intel® Core™ i3 with B75

* Intel® Core™ i5 with B75

* Intel® Core™ i7 with B75

* Intel® vPro™ i5 with one of these chipsets: B75, Q77

* Intel® vPro™ i7 with one of these chipsets: B75, Q77

• The Intel® Management Engine software kit must be installed (The Local Manageability Service and the Intel® Management Engine Interface must be installed and running.)

• Local Administrator rights on the target machine

• THE Intel® SBA does not support the 800 x 600 screen resolution.

• Visit the ASUS website at www.asus.com for the latest CPU QVL (Qualied Vendors List).

1-34 Chapter 1: Product introduction

2-1ASUS P8B75-M LX

Chapter 2 BIOS information

Save a copy of the original motherboard BIOS le to a USB ash disk in case you need to

restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update utility.

• ASUS Update requires an Internet connection either through a network or an Internet Service Provider (ISP).

• This utility is available in the support DVD that comes with the motherboard package.

Updating the BIOS

To update the BIOS:

1. From the Windows® desktop, click Start > Programs > ASUS > AI Suite II > AI Suite II X.XX.XX to launch the AI Suite II utility. The AI Suite II Quick Bar appears.

2. Click Update button from the Quick Bar, and then click ASUS Update from the popup menu. The ASUS Update main screen appears. From the list, select either of the following methods:

Updating from the Internet

a. Select Update BIOS from the Internet, then click Next.

b. Select the ASUS FTP site nearest you to avoid network trafc, then click Next.

c. From the FTP site, select the BIOS version that you wish to download then click Next.

2.1.1 ASUS Update utility

The ASUS Update is a utility that allows you to manage, save, and update the motherboard BIOS in Windows® environment.

Installing ASUS Update

To install ASUS Update:

1. Place the support DVD in the optical drive. The Specials menu appears.

2. Click the Utilities tab, then click AI Suite II.

3. Follow the onscreen instructions to complete the installation.

Quit all Windows® applications before you update the BIOS using this utility.

2.1 Managing and updating your BIOS

Chapter 2: BIOS information2-2

2.1.2 ASUS EZ Flash 2

The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based utility.

Before you start using this utility, download the latest BIOS le from the ASUS website at

www.asus.com.

To update the BIOS using EZ Flash 2:

1. Insert the USB ash disk that contains the latest BIOS le to the USB port.

2. Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select ASUS EZ Flash Utility and press <Enter> to enable it.

The ASUS Update utility is capable of updating itself through the Internet. Always update the utility to avail all its features.

Updating from a BIOS file

a. Select Update BIOS from le, then click Next.

b. Locate the BIOS le from the Open window, then click Open.

3. Follow the onscreen instructions to complete the updating process.

Flash Info

MODEL: P8B75-M LX VER: 0203 DATE: 04/01/2012

Exit

[Enter] Select or Load [Tab] Switch [Up/Down/PageUp/PageDown/Home/End] Move [Esc] Exit

File Path:

Drive Info Folder Info

fs0:\ 04/01/2012 10:23p 8390656 P8B75MLX.CAP

ASUS EZ Flash 2 Utility V01.04

File Info

MODEL: VER: DATE

Help Info

2-3ASUS P8B75-M LX

• This function supports USB ash disks with FAT 32/16 format and single partition only.

• DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure!

2.1.3 ASUS CrashFree BIOS 3 utility

The ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS le

when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS

le using the motherboard support DVD or a USB ash drive that contains the updated BIOS le.

• Before using this utility, rename the BIOS le in the removable device into

P8B75MLX.CAP.

• The BIOS le in the support DVD may not be the latest version. Download the latest BIOS le from the ASUS website at www.asus.com.

Recovering the BIOS

To recover the BIOS:

1. Turn on the system.

2. Insert the support DVD to the optical drive or the USB ash drive that contains the BIOS le to the

USB port.

3. The utility automatically checks the devices for the BIOS le. When found, the utility reads the BIOS le and enters ASUS EZ Flash 2 utility automatically.

4. The system requires you to enter BIOS Setup to recover BIOS setting. To ensure system compatibility and stability, we recommend that you press <F5> to load default BIOS values.

DO NOT shut down or reset the system while updating the BIOS! Doing so can cause system boot failure!

3. Press <Tab> to switch to the Drive eld.

4. Press the Up/Down arrow keys to nd the USB ash disk that contains the latest BIOS, and then

press <Enter>.

5. Press <Tab> to switch to the Folder Info eld.

6. Press the Up/Down arrow keys to nd the BIOS le, and then press <Enter> to perform the BIOS

update process. Reboot the system when the update process is done.

Chapter 2: BIOS information2-4

Welcome to FreeDOS (http://www.freedos.org)!

C:\>d:

D:\>

3. When the Make Disk menu appears, select the FreeDOS command prompt item by pressing the

item number.

4. At the FreeDOS prompt, type d: and press <Enter> to switch the disk from

Drive C (optical drive) to Drive D (USB ash drive).

Please select boot device:

SATA: XXXXXXXXXXXXXXXX USB XXXXXXXXXXXXXXXXX UEFI: XXXXXXXXXXXXXXXX Enter Setup

 ↑and ↓ to move selection ENTER to select boot device ESC to boot using defaults

2.1.4 ASUS BIOS Updater

The ASUS BIOS Updater allows you to update BIOS in DOS environment. This utility also

allows you to copy the current BIOS le that you can use as a backup when the BIOS fails or

gets corrupted during the updating process.

The succeeding utility screens are for reference only. The actual utility screen displays may not be same as shown.

Before updating BIOS

1. Prepare the motherboard support DVD and a USB ash drive in FAT32/16 format and single

partition.

2. Download the latest BIOS le and BIOS Updater from the ASUS website at http://support.asus.com and save them on the USB ash drive.

NTFS is not supported under DOS environment. Do not save the BIOS le and BIOS Updater to a hard disk drive or USB ash drive in NTFS format.

3. Turn off the computer and disconnect all SATA hard disk drives (optional).

Booting the system in DOS environment

1. Insert the USB ash drive with the latest BIOS le and BIOS Updater to the USB port.

2. Boot your computer. When the ASUS Logo appears, press <F8> to show the BIOS Boot Device Select Menu. Insert the support DVD into the optical drive and select the optical drive as the boot

device.

2-5ASUS P8B75-M LX

Updating the BIOS le

To update the BIOS le using BIOS Updater

1. At the FreeDOS prompt, type bupdater /pc /g and press <Enter>.

ASUSTek BIOS Updater for DOS V1.28

Current ROM

Update ROM

Note

[Enter] Select or Load [Tab] Switch [V] Drive Info [Up/Down/Home/End] Move [B] Backup [Esc] Exit

P8B75LX.CAP 8390656 2012-041-01 17:30:48

PATH: A:\

BOARD: P8B75-M LX VER: 0203 DATE: 04/01/2012

BOARD: Unknown VER: Unknown DATE: Unknown

D:\>bupdater /pc /g

2. The BIOS Updater screen appears as below.

3. Press <Tab> to switch between screen elds and use the <Up/Down/Home/End> keys to select the BIOS le and press <Enter>. BIOS Updater checks the selected BIOS le and prompts you to conrm BIOS update.

Are you sure to update BIOS?

Yes No

4. Select Yes and press <Enter>. When BIOS update is done, press <ESC> to exit BIOS Updater. Restart your computer.

DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure!

• For BIOS Updater version 1.04 or later, the utility automatically exits to the DOS prompt after updating BIOS.

• Ensure to load the BIOS default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu. Refer to section 2.9 Exit menu for details.

• Ensure to connect all SATA hard disk drives after updating the BIOS le if you have

disconnected them.

Chapter 2: BIOS information2-6

Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force reset from a running operating system can cause damage to your data or system. We recommend to always shut down the system properly from the operating system.

• The BIOS setup screens shown in this section are for reference purposes only, and may not exactly match what you see on your screen.

• Visit the ASUS website at www.asus.com to download the latest BIOS le for this

motherboard.

• Ensure that a USB mouse is connected to your motherboard if you want to use the mouse to control the BIOS setup program.

• If the system becomes unstable after changing any BIOS setting, load the default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu. See section 2.9 Exit Menu for details.

• If the system fails to boot after changing any BIOS setting, try to clear the CMOS and reset the motherboard to the default value. See section 1.9 Jumpers for information on how to erase the RTC RAM.

2.2 BIOS setup program

Use the BIOS Setup program to update the BIOS or congure its parameters. The BIOS

screens include navigation keys and brief online help to guide you in using the BIOS Setup program.

Entering BIOS Setup at startup

To enter BIOS Setup at startup:

• Press <Delete> during the Power-On Self Test (POST). If you do not press <Delete>, POST continues with its routines.

Entering BIOS Setup after POST

To enter BIOS Setup after POST:

• Press <Ctrl>+<Alt>+<Del> simultaneously.

• Press the reset button on the system chassis.

• Press the power button to turn the system off then back on. Do this option only if you

failed to enter BIOS Setup using the rst two options.

BIOS menu screen

The BIOS setup program can be used under two modes: EZ Mode and Advanced Mode. You can change modes from the Exit menu or from the Exit/Advanced Mode button in the EZ Mode/Advanced Mode screen.

2-7ASUS P8B75-M LX

EZ Mode

By default, the EZ Mode screen appears when you enter the BIOS setup program. The EZ Mode provides you an overview of the basic system information, and allows you to select

the display language, system performance mode and boot device priority. To access the Advanced Mode, click Exit/Advanced Mode, then select Advanced Mode or press F7 hot key for the advanced BIOS settings.

The default screen for entering the BIOS setup program can be changed. Refer to the Setup Mode item in sectionsection 2.7 Boot menu for details.

• The boot device options vary depending on the devices you installed to the system.

• The Boot Menu(F8) button is available only when the boot device is installed to the

system.

P8B75-M LX

BIOS Version : 0203

CPU Type : Genuine Intel(R) CPU @ 2.90GHz Speed : 2900 MHz

Total Memory : 1024 MB (DDR3 1333MHz)

Exit/Advanced Mode

Temperature Voltage Fan Speed

CPU +113.0ºF/+45.0ºC CPU 1.248V 5V 5.160V CPU_FAN 3325RPM CHA_FAN1 N/A

MB +75.2ºF/+40.0ºC 3.3V 3.344V 12V 12.248V

English

UEFI BIOS Utility - EZ Mode

Friday [10/08/2010]

Normal

Quiet

Performance Energy Saving

System Performance

Default(F5)

Use the mouse to drag or keyboard to navigate to decide the boot priority.

Boot Priority

Exits the BIOS setup program without saving the changes, saves the changes and resets the system, or enters the Advanced Mode

Selects the display language of the BIOS setup program

Displays the CPU/motherboard temperature, CPU/5V/3.3V/12V voltage output, CPU/chassis fan speed

Power Saving mode

Normal mode

ASUS Optimal mode

Loads optimized default

Selects the boot device priority

Displays the system properties of the selected mode on the right hand side

Advanced Mode(F7)Shortcut (F3)

Quick access to a few utilities and advanced settings

Enters the Advanced Mode

Boot Menu(F8)

Selects the boot device priority

Chapter 2: BIOS information2-8

Advanced Mode

The Advanced Mode provides advanced options for experienced end-users to congure the BIOS settings. The gure below shows an example of the Advanced Mode. Refer to the following sections for the detailed congurations.

To access the EZ Mode, click Exit, then select ASUS EZ Mode.

Main

Ai Tweaker

Advanced Monitor Boot Tool

Exit

Enabled/Disabled Realtek Controller.

→←: Select Screen ↑↓: Select Item

Enter: Select +/-: Change Opt. F1: General Help F2: Previous Values F3: Shortcut

F5: Optimized Defaults

F6: ASUS Ratio Boost F10: Save ESC: Exit

F12: Print Screen

Back Advanced\ Onboard Devices Conguration >

UEFI BIOS Utility - Advanced Mode

Navigation keys

General help

Menu bar

Conguration elds

Menu items

Scroll bar

Pop-up window

Back button

Menu items

The highlighted item on the menu bar displays the specic items for that menu. For example,

selecting Main shows the Main menu items. The other items (Ai Tweaker, Advanced, Monitor, Boot, Tool, and Exit) on the menu bar have

their respective menu items.

Back button

This button appears when entering a submenu. Press <Esc> or use the USB mouse to click this button to return to the previous menu screen.

Submenu items

A greater than sign (>) before each item on any menu screen means that the item has a submenu. To display the submenu, select the item and press <Enter>.

HD Audio Controller Enabled

Front Panel Type HD

Realtek LAN Controller Enabled

Realtek PXE OPROM Disabled

> Serial Port Conguration

> Parallel Port Conguration

Realtek LAN Controller

Disabled Enabled

Submenu items

2-9ASUS P8B75-M LX

Pop-up window

Select a menu item and press <Enter> to display a pop-up window with the conguration

options for that item.

Scroll bar

A scroll bar appears on the right side of a menu screen when there are items that do not t on

the screen. Press the Up/Down arrow keys or <Page Up> / <Page Down> keys to display the other items on the screen.

Navigation keys

At the bottom right corner of the menu screen are the navigation keys for the BIOS setup program. Use the navigation keys to select items in the menu and change the settings.

General help

At the top right corner of the menu screen is a brief description of the selected item.

Conguration elds

These elds show the values for the menu items. If an item is user-congurable, you can change the value of the eld opposite the item. You cannot select an item that is not user-congurable.

A congurable eld is highlighted when selected. To change the value of a eld, select it and

press <Enter> to display a list of options.

Chapter 2: BIOS information2-10

2.3.1 System Language [English]

Allows you to choose the BIOS language version from the options. Conguration options:

[English] [Español] [Русский]

2.3.2 System Date [Day xx/xx/xxxx]

Allows you to set the system date.

2.3.3 System Time [xx:xx:xx]

Allows you to set the system time.

2.3.4 Security

The Security menu items allow you to change the system security settings.

• If you have forgotten your BIOS password, erase the CMOS Real Time Clock (RTC)

RAM to clear the BIOS password. See section 1.9 Jumpers for information on how to erase the RTC RAM.

• The Administrator or User Password items on top of the screen show the default Not

Installed. After you set a password, these items show Installed.

2.3 Main menu

The Main menu screen appears when you enter the Advanced Mode of the BIOS Setup program. The Main menu provides you an overview of the basic system information, and allows you to set the system date, time, language, and security settings.

Main

Ai Tweaker

Advanced Monitor Boot Tool

Exit

UEFI BIOS Utility - Advanced Mode

Choose the system default languageBIOS Information

BIOS Version 0203 x64 Build Date 04/01/2012 ME Version 8.0.0.1441 South Bridge Stepping C1

CPU Information

Genuine Intel(R) CPU @ 2.90GHz Speed 2900 MHz

Memory Information Total Memory 1024 MB (DDR3)

Memory Frequency 1333 MHz

System Language English

System Date [Mon 12/27/2010] System Time [16:46:15]

Access Level Administrator

> Security

2-11ASUS P8B75-M LX

Administrator Password

If you have set an administrator password, we recommend that you enter the administrator password for accessing the system. Otherwise, you might be able to see or change only

selected elds in the BIOS setup program.

To set an administrator password:

1. Select the Administrator Password item and press <Enter>.

2. From the Create New Password box, key in a password, then press <Enter>.

3. Conrm the password when prompted.

To change an administrator password:

1. Select the Administrator Password item and press <Enter>.

2. From the Enter Current Password box, key in the current password, then press <Enter>.

3. From the Create New Password box, key in a new password, then press <Enter>.

4. Conrm the password when prompted.

To clear the administrator password, follow the same steps as in changing an administrator

password, but press <Enter> when prompted to create/conrm the password. After you clear

the password, the Administrator Password item on top of the screen shows Not Installed.

User Password

If you have set a user password, you must enter the user password for accessing the system. The User Password item on top of the screen shows the default Not Installed. After you set a password, this item shows Installed.

To set a user password:

1. Select the User Password item and press <Enter>.

2. From the Create New Password box, key in a password, then press <Enter>.

3. Conrm the password when prompted.

To change a user password:

1. Select the User Password item and press <Enter>.

2. From the Enter Current Password box, key in the current password, then press <Enter>.

3. From the Create New Password box, key in a new password, then press <Enter>.

4. Conrm the password when prompted.

To clear the user password, follow the same steps as in changing a user password, but press

<Enter> when prompted to create/conrm the password. After you clear the password, the

User Password item on top of the screen shows Not Installed.

Chapter 2: BIOS information2-12

2.4 Ai Tweaker menu

The Ai Tweaker menu items allow you to congure overclocking-related items.

Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect eld

values can cause the system to malfunction.

The conguration options for this section vary depending on the CPU and DIMM model you

installed on the motherboard.

Target DRAM Speed : xxxxMHz

Displays the current DRAM speed.

2.4.1 ASUS MultiCore Enhancement [Enabled].

[Enabled] Sets to [Enabled] for maximum performance under XMP/Manual/User-Sets to [Enabled] for maximum performance under XMP/Manual/User-

dened memory frequency mode..

[Disabled] Set to [Disabled] for default core ratio settings.

2.4.2 CPU bus speed: DRAM speed ratio mode [Auto]

Allows you to set the CPU bus speed to DRAM speed ratio mode. Conguration options:

[Auto] [100:100] [100:133]

2-13ASUS P8B75-M LX

2.4.3 Memory Frequency [Auto]

Allows you to set the memory operating frequency. The conguration options vary with

the CPU bus speed : DRAM speed ratio mode item settings.

Selecting a very high memory frequency may cause the system to become unstable! If this happens, revert to the default setting.

2.4.4 iGPU Max. Frequency [Auto]

Allows you to set the iGPU maximum frequency. The values range from xxxxMHz (by CPU) to 3000MHz with a 50MHz interval. Use <+>/<-> to adjust the value.

2.4.5 GPU Boost [OK]

[OK] Select [OK] to automatically optimize the iGPU frequency. [Cancel] Select [Cancel] to use a xed iGPU frequency.

2.4.6 DRAM Timing Control

The sub-items in this menu allow you to set the DRAM timing control features. Use the <+> and <-> keys to adjust the value. To restore the default setting, type [auto] using the keyboard and press <Enter>.

Changing the values in this menu may cause the system to become unstable! If this happens, revert to the default settings.

2.4.7 CPU Power Management

The sub-items in this menu allow you to set the CPU ratio and features.

CPU Ratio [Auto]

Allows you to manually adjust the maximum non-turbo CPU ratio. Use <+> and <-> keys or the numeric keypad to adjust the value. The valid value ranges vary according to your CPU model.

Enhanced Intel SpeedStep Technology [Enabled]

Allows you to enable or disable the Enhanced Intel® SpeedStep Technology (EIST). [Disabled] Disables this function.

[Enabled] The operating system dynamically adjusts the processor voltage and

core frequency which may result in decreased average consumption and decreased average heat production.

Turbo Mode [Enabled]

[Enabled] Allows processor cores to run faster than marked frequency in specic

conditions.

[Disabled] Disables this function.

The rst three items of the following appear only when you set the Turbo Mode item to [Enabled].

Chapter 2: BIOS information2-14

Long Duration Power Limit [Auto]

Allows you to limit the turbo ratio’s long duration power. Use the <+> and <-> keys to adjust the value.

Long Duration Maintained [Auto]

Allows you to maintain the turbo ratio’s long duration power. Use the <+> and <-> keys to adjust the value.

Short Duration Power Limit [Auto]

Allows you to limit the turbo ratio’s long duration power. Use the <+> and <-> keys to adjust the value.

Primary Plane Current Limit [Auto]

Maximum instantaneous current allowed at any given time for CPU cores Use <+> and <-> key to adjust the value at 0.125A increment.

Secondary Plane Current Limit [Auto]

Maximum instantaneous current allowed at any given time for Internal Graphics cores.instantaneous current allowed at any given time for Internal Graphics cores. current allowed at any given time for Internal Graphics cores. Use <+> and <-> key to adjust the value at 0.125A increment.

Some of the following items are adjusted by typing the desired values using the numeric keypad and press the <Enter> key. You can also use the <+> and <-> keys to adjust the value. To restore the default setting, type [auto] using the keyboard and press the <Enter> key.

2-15ASUS P8B75-M LX

Be cautious when changing the settings of the Advanced menu items. Incorrect eld values

can cause the system to malfunction.

2.5 Advanced menu

The Advanced menu items allow you to change the settings for the CPU and other system devices.

Main

Ai Tweaker

Advanced Monitor Boot Tool

Exit

Trusted Computing (TPM) settings

UEFI BIOS Utility - Advanced Mode

→←: Select Screen ↑↓: Select Item

Enter: Select +/-: Change Opt. F1: General Help F2: Previous Values F3: Shortcut

F5: Optimized Defaults

F6: ASUS Ratio Boost F10: Save ESC: Exit

F12: Print Screen

> CPU Conguration

> PCH Conguration

> SATA Conguration

> System Agent Conguration

> AMT Conguration

> USB Conguration

> Onboard Devices Conguration

> APM

> Network Stack

2.5.1 CPU Conguration

The items in this menu show the CPU-related information that the BIOS automatically detects.

The items shown in submenu may be different due to the CPU you installed.

Intel Adaptive Thermal Monitor [Enabled]

[Enabled] Enables the overheated CPU to throttle its clock speed to cool down.

[Disabled] Disables the CPU thermal monitor function.

Active Processor Cores [All]

Allows you to choose the number of CPU cores to activate in each processor package.

Conguration options: [All] [1] [2] [3]

Limit CPUID Maximum [Disabled]

[Enabled] Allows legacy operating systems to boot even without support for CPUs

with extended CPUID functions.

[Disabled] Disables this function.

Chapter 2: BIOS information2-16

Execute Disable Bit [Enabled]

[Enabled] Enables the No-Execution Page Protection Technology.

[Disabled] Forces the XD feature ag to always return to zero (0).

Intel® Virtualization Technology [Disabled]

[Enabled] Allows a hardware platform to run multiple operating systems separately

and simultaneously, enabling one system to virtually function as several systems.

[Disabled] Disables this function.

Hardware Prefetcher [Enabled]

[Enabled] Allows a hardware platform to run multiple operating systems separately

and simultaneously, enabling one system to virtually function as several systems.

[Disabled] Disables this function.

Adjacent Cache Line Prefetch [Enabled]

[Enabled] Allows a hardware platform to perform adjacent cache line prefetching.

[Disabled] Disables this function.

CPU Power Management Conguration

CPU Ratio [Auto]

Allows you to set the ratio between the CPU Core Clock and the BCLK Frequency. Use <+> and <-> keys to adjust the ratio. The valid value ranges vary according to your CPU model.

Enhanced Intel SpeedStep Technology [Enabled]

Allows you to enable or disable the Enhanced Intel® SpeedStep Technology (EIST). [Disabled] The CPU runs at its default speed.

[Enabled] The operating system controls the CPU speed.

Turbo Mode [Enabled]

This item allows you to enable or disable the Intel® Turbo Mode Technology.

[Enabled] Allows processor cores to run faster than marked frequency in specic condition.

[Disabled] Disables this function.

CPU C1E [Auto]

Enables or disables the C1E support function. This item should be enabled in order to enable the

Enhanced Halt State. Conguration options: [Auto] [Enabled] [Disabled]

CPU C3 Report [Auto]

Allows you to disable or enable the CPU C3 report to OS. Conguration options: [Auto] [Enabled]

[Disabled]

CPU C6 Report [Auto]

Allows you to disable or enable the CPU C6 report to OS. Conguration options: [Auto] [Enabled]Conguration options: [Auto] [Enabled]

[Disabled]

2.5.2 PCH Conguration

High Precision Timer [Enabled]

Allows you to enable or disable the High Precision Event Timer.

Conguration options: [Enabled] [Disabled]

2-17ASUS P8B75-M LX

Intel® Rapid Start Technology [Disabled]

Allows you to enable or disable the Intel(R) Rapid Start Technology.

Conguration options: [Enabled] [Disabled]

The following three items appear only when you set the Intel(R) Rapid Start Technology to [Enabled].

Entry on S3 RTC Wake [Enabled]

Allows you to enable or disable the iFFS invocation upon S3 RTC wake. Conguration options:

[Enabled] [Disabled]

Entry After [10 Minutes]

This item appears only when you set the Entry on S3 RTC Wake to [Enabled] and allows you to

set the RTC wake timer at S3 entry. Conguration options: [Immediately] [1 minute] [2 minute] [5

minute] [10 minute] [15 minute] [30 minute] [1 hour] [2 hours]

Active Page Threshold Support [Disbaled]

Allows you to enable or disable the Active Page Threshold Support. Conguration options:

[Enabled] [Disabled]

Active Memory Threshold [x]

This item appears only when you set the Active Page Threshold Support to [Enabled] and allows

you to set the Active Memory Threshold. When the partition size is larger than the Active Page Threshold size, the system will try to support the Intel(R) Rapid Start Technology. When the item is set to zero, the system automatically checks whether the partition size is enough at S3 entry. Key in

the desired value using the numeric keypad.

Intel® Smart Connect Technology [Disabled]

ISCT Configuration [Disabled]

Allows you to enable or disable the ISCT conguration. Conguration options: [Enabled] [Disabled]

2.5.3 SATA Conguration

While entering Setup, the BIOS automatically detects the presence of SATA devices. The SATA Port items show Empty if no SATA device is installed to the corresponding SATA port.

SATA Mode Selection [IDE]

Allows you to set the SATA conguration.

[IDE] Set to [IDE] when you want to use the Serial ATA hard disk drives as

Parallel ATA physical storage devices.

[AHCI] Set to [AHCI] when you want the SATA hard disk drives to use the AHCI

(Advanced Host Controller Interface). The AHCI allows the onboard storage driver to enable advanced Serial ATA features that increases storage performance on random workloads by allowing the drive to internally

optimize the order of commands.

S.M.A.R.T. Status Check [Enabled]

S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) is a monitor system. When read/write of your hard disk errors occur, this feature allows the hard disk to report warning

messages during the POST. Conguration options: [Enabled] [Disabled]

Hot Plug [Disabled]

This item only appears when you set the SATA Mode Selection item to [AHCI] and allows you

to enable or disable the hot-plug support for each SATA port. Conguration options: [Enabled]

[Disabled]

Chapter 2: BIOS information2-18

2.5.4 System Agent Conguration

Memory Remap Feature [Enabled]

[Enabled] Allow you to enable remapping the memory above 4GB.

[Disabled] Disables this function.

Graphics Conguration

Primary Display [Auto]

Allows you to decide which graphics controller to use as the primary boot device. Conguration

options: [Auto] [iGPU] [PCIE] [PCI]

iGPU Memory [64M]

Allows you to select the amount of system memory allocated to DVMT 5.0 used by the iGPU.

Conguration options: [32M] [64M] [96M] [128M] ~ [416M] [448M] [480M] [512M] [1024M]

Render Standby [Enabled]

Allows you to enable the Intel Graphics Render Standby support to reduce the iGPU power use

when idle. Conguration options: [Disabled] [Enabled]

iGPU Multi-Monitor [Disabled]

Allows you to enable or disable the iGPU Multi-Monitor. For Lucid Virtu Universal MVP function support, set this item to [Enabled] to empower both the integrated and discrete graphic cards. The

iGPU shared memory size will be xed at 64MB. Conguration options: [Disabled] [Enabled]

NB PCIe Conguration

Allows you to congure the NB PCI Express settings.

PCIEX16_1 Link Speed [Auto]

Allows you to congure the PCIE x16_1 speed. Conguration options: [Auto] [Gen1] [Gen2]

2.5.5 AMT Conguration

The items in this menu allow you to change the Intel® Active Management Technology (AMT) feature.

Intel AMT [Enabled]

Allow you to enable or disable the Intel® Active Management Technology (AMT) in the BIOS

extension. Conguration options: [Enabled] [Disabled]

• iAMT H/W is always enabled. This option just controls the BIOS extension execution. If

enabled, this requires additional rmware in the SPI device.

• The following two items become congurable only when you set the Intel AMT item to

[Enabled].

Invoke MEBx [Disabled]

This item become congurable only when the previous item is set to [Enabled] and allows you to enable or disable this function. Conguration options: [Enabled] [Disabled]

Un-Congure ME [Disabled]

Sets this item to [Disabled] to uncongure AMT/ME without using a password or set it to [Enabled] to use a password. Conguration options: [Enabled] [Disabled]

2-19ASUS P8B75-M LX

WatchDog [Disabled]

When set to [Enabled], the WatchDog Timer will monitor the time taken for each task

performed by a software or hardware. Conguration options: [Enabled] [Disabled]

The following two items become congurable only when you set the WatchDog Timer item

to [Enabled].

OS Timer [0]

Use the <+> and <-> keys to adjust the value or key in a number directly.

BIOS Timer [0]

Use the <+> and <-> keys to adjust the value or key in a number directly.

The USB Devices item shows the auto-detected values. If no USB device is detected, the item shows None.

Legacy USB Support [Enabled]

[Enabled] Enables the support for USB devices on legacy operating systems (OS).

[Disabled] The USB devices can be used only for the BIOS setup program.

[Auto] Allows the system to detect the presence of USB devices at startup. If

detected, the USB controller legacy mode is enabled. If no USB device is detected, the legacy USB support is disabled.

Legacy USB3.0 Support [Enabled]

This item appears only when you set the Legacy USB Support item to [Enabled].

[Enabled] Enables the support for USB 3.0 devices on legacy operating systems

(OS).

[Disabled] Disables the function.

Intel xHCI Mode [Enabled]

Allows you to select an operation mode for the Intel xHCI controller. Conguration options:

[Smart Auto] [Auto] [Enabled] [Disabled]

EHCI Hand-off [Disabled]

[Enabled] Enables the support for operating systems without an EHCI hand-off

feature.

[Disabled] Disables the function.

2.5.6 USB Conguration

The items in this menu allow you to change the USB-related features.

Chapter 2: BIOS information2-20

2.5.7 Onboard Devices Conguration

HD Audio Controller [Enabled]

[Enabled] Enables the High Denition Audio Controller.

[Disabled] Disables the controller.

The following item appears only when you set the HD Audio Controller item to [Enabled].

Front Panel Type [HD]

Allows you to set the front panel audio connector (AAFP) mode to legacy AC’97 or highdenition audio depending on the audio standard that the front panel audio module supports.

[HD] Sets the front panel audio connector (AAFP) mode to high denition audio.

[AC97] Sets the front panel audio connector (AAFP) mode to legacy AC’97

Realtek LAN Controller [Enabled]

[Enabled] Enables the Realtek LAN controller.

[Disabled] Disables the controller.

Realtek PXE OPROM [Disabled]

This item appears only when you set the previous item to [Enabled] and allows you to

enable or disable the PXE OptionRom of the Realtek LAN controller. Conguration options:

[Enabled] [Disabled]

Serial Port Conguration

The sub-items in this menu allow you to set the serial port conguration.

Serial Port [Enabled]

Allows you to enable or disable the serial port (COM). Conguration options: [Enabled] [Disabled]

Change Settings [IO=3F8h; IRQ=4]

This item appears only when you set the previous item to [Enabled] and allows you to select the

Serial Port base address. Conguration options: [IO=3F8h; IRQ=4] [IO=2F8h; IRQ=3] [IO=3E8h; IRQ=4] [IO=2E8h; IRQ=3]

Parallel Port Conguration

The sub-items in this menu allow you to set the parallel port conguration.

Parallel Port [Enabled]

Allows you to enable or disable the parallel port (LPT/LPTE).

Conguration options: [Enabled] [Disabled]

The following two items appear only when you set the previous item to [Enabled].

Change Settings [Auto]

Allows you to select an optimal setting for Super I/O devices. Conguration options: [Auto] [IO=378h; IRQ=5;] [IO=378h; IRQ=5,6,7,9,10,11,12;] [IO=278h; IRQ=5,6,7,9,10,11,12;] [IO=3BCh; IRQ=5,6,7,9,10,11,12;]

Device Mode [STD Printer Mode]

Allows you to select the Printer Port mode. Conguration options: [STD Printer Mode] [SPP Mode]

[EPP-1.9 and SPP Mode] [EPP-1.7 and SPP Mode] [ECP Mode] [ECP and EPP 1.9 Mode] [ECP and EPP 1.7 Mode]

2-21ASUS P8B75-M LX

2.5.8 APM

Restore AC Power Loss [Power Off]

[Power On] The system goes into on state after an AC power loss.

[Power Off] The system goes into off state after an AC power loss.

[Last State] The system goes into either off or on state, whatever the system state was

before the AC power loss.

Power On By PS/2 Keyboard [Disabled]

[Disabled] Disables the Power On by a PS/2 keyboard.

[Space Bar] Sets the Space Bar on the PS/2 keyboard to turn on the system.

[Ctrl-Esc] Sets the Ctrl+Esc key on the PS/2 keyboard to turn on the system.

[Power Key] Sets Power key on the PS/2 keyboard to turn on the system. This feature

requires an ATX power supply that provides at least 1A on the +5VSB lead.

Power On By PCIE/PCI [Disabled]

[Disabled] Disables the PCIE/PCI devices to generate a wake event.

[Enabled] Enables the PCIE/PCI devices to generate a wake event.

Power On By Ring [Disabled]

[Disabled] Disables Ring to generate a wake event.

[Enabled] Enables Ring to generate a wake event.

Power On By RTC [Disabled]

[Disabled] Disables RTC to generate a wake event. [Enabled] When set to [Enabled], the items RTC Alarm Date (Days) and Hour/

Minute/Second will become user-congurable with set values.

2.5.9 Network Stack

Network Stack [Disable Link]

This item allows user to disable or enable the UEFI network stack. Conguration options:

[Disable Link] [Enable]

The following two items appear only when you set the previous item to [Enabled].

Ipv4 PXE Support [Enabled]

This item allows user to disable or enable the Ipv4 PXE Boot support. Conguration options:

[Disable Link] [Enable]

Ipv6 PXE Support [Enabled]

This item allows user to disable or enable the Ipv6 PXE Boot support. Conguration options:

[Disable Link] [Enable]

Chapter 2: BIOS information2-22

2.6 Monitor menu

The Monitor menu displays the system temperature/power status, and allows you to change the fan settings.

Scroll down to display the following items:

Main

Ai Tweaker

Advanced Monitor Boot Tool

Exit

CPU Temperature

→←: Select Screen

↑↓: Select Item

Enter: Select

+/-: Change Opt.

F1: General Help

F2: Previous Values

F3: Shortcut

F5: Optimized Defaults

F6: ASUS Ratio Boost

F10: Save ESC: Exit

F12: Print Screen

EFI BIOS Utility - Advanced Mode

CPU Temperature +45ºC / +113ºF+45ºC / +113ºF

MB Temperature +34ºC / +93ºF

CPU Fan Speed 3325 RPM

Chassis Fan 1 Speed N/A

CPU Q-Fan Control Enabled

CPU Fan Speed Low Limit 200 RPM

CPU Fan Prole Standard

Chassis Q-Fan Control Enabled

Chassis Fan Speed Low Limit 600 RPM

Chassis Fan Prole Standard

CPU Voltage +1.184 V

3.3V Voltage +3.312 V

5V Voltage +5.080 V

12V Voltage +12.192 V

Anti Surge Support Enabled

2-23ASUS P8B75-M LX

2.6.1 CPU Temperature / MB Temperature [xxx�C/xxx�F][xxx�C/xxx�F]

The onboard hardware monitor automatically detects and displays the CPU and motherboard temperatures. Select Ignore if you do not wish to display the detected temperatures.

2.6.2 CPU / Chassis Fan Speed [xxxx RPM] or [Ignore] / [N/A]

The onboard hardware monitor automatically detects and displays the CPU and chassis fan

speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the eld

shows N/A. Select Ignore if you do not wish to display the detected speed.

2.6.3 CPU Q-Fan Control [Enabled]

[Disabled] Disables the CPU Q-Fan control feature.

[Enabled] Enables the CPU Q-Fan control feature.

CPU Fan Speed Low Limit [200 RPM]

This item appears only when you enable the CPU Q-Fan Control feature and allows you to disable or set the CPU fan warning speed.

Conguration options: [Ignore] [100 RPM] [200 RPM] [300 RPM] [400 RPM] [500 RPM]

CPU Fan Profile [Standard]

This item appears only when you enable the CPU Q-Fan Control feature and allows you to set the appropriate performance level of the CPU fan.

[Standard] Sets to [Standard] to make the CPU fan automatically adjust depending on the CPU

temperature.

[Silent] Sets to [Silent] to minimize the fan speed for quiet CPU fan operation.

[Turbo] Sets to [Turbo] to achieve maximum CPU fan speed.

[Manual] Sets to [Manual] to assign detailed fan speed control parameters.

The following four items appear only when you set CPU Fan Prole to [Manual].

CPU Upper Temperature [70]

Use the <+> and <-> keys to adjust the upper limit of the CPU temperature. The values range from 20ºC to 75ºC.

CPU Fan Max. Duty Cycle(%) [100]

Use the <+> and <-> keys to adjust the maximum CPU fan duty cycle. The values range from 20% to 100%. When the CPU temperature reaches the upper limit, the CPU fan will operate at the maximum duty cycle.

CPU Lower Temperature [20]

Use the <+> and <-> keys to adjust the lower limit of the CPU temperature. The values range from 20ºC to 75ºC.

CPU Fan Min. Duty Cycle(%) [20]

Use the <+> and <-> keys to adjust the minimum CPU fan duty cycle. The values range from 0% to 100%. When the CPU temperature is under 40ºC, the CPU fan will operate at the minimum

duty cycle.

Chapter 2: BIOS information2-24

2.6.4 Chassis Q-Fan Control [Enabled]

[Disabled] Disables the Chassis Q-Fan control feature.

[Enabled] Enables the Chassis Q-Fan control feature.

Chassis Fan Speed Low Limit [600 RPM]

This item appears only when you enable the Chassis Q-Fan Control feature and allows you to disable or set the chassis fan warning speed.

Conguration options: [Ignore] [200 RPM] [300 RPM] [400 RPM] [500 RPM] [600 RPM]

Chassis Fan Profile [Standard]

This item appears only when you enable the Chassis Q-Fan Control feature and allows you to set the appropriate performance level of the chassis fan.

[Standard] Sets to [Standard] to make the chassis fan automatically adjust depending on the

chassis temperature.

[Silent] Sets to [Silent] to minimize the fan speed for quiet chassis fan operation.

[Turbo] Sets to [Turbo] to achieve maximum chassis fan speed.

[Manual] Sets to [Manual] to assign detailed fan speed control parameters.

The following four items appear only when you set Chassis Fan Prole to [Manual].

Chassis Upper Temperature [70]

Use the <+> and <-> keys to adjust the upper limit of the chassis temperature. The values range from 40ºC to 90ºC.

Chassis Fan Max. Duty Cycle(%) [100]

Use the <+> and <-> keys to adjust the maximum chassis fan duty cycle. The values range from 60% to 100%. When the chassis temperature reaches the upper limit, the chassis fan will operate at the maximum duty cycle.

Chassis Lower Temperature [40]

Displays the lower limit of the chassis temperature.

CPU Fan Min. Duty Cycle(%) [60]

Use the <+> and <-> keys to adjust the minimum chassis fan duty cycle. The values range from 60% to 100%. When the chassis temperature is under 40ºC, the chassis fan will operate at the

minimum duty cycle.

2.6.5 CPU Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage

The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators. Select Ignore if you do not want to detect this item.

2.6.6 Anti Surge Support [Enabled]

This item allows you to enable or disable the Anti Surge function.

Conguration options: [Disabled] [Enabled]

2-25ASUS P8B75-M LX

2.7 Boot menu

The Boot menu items allow you to change the system boot options.

2.7.1 Bootup NumLock State [On]

[On] Sets the power-on state of the NumLock to [On].

[Off] Sets the power-on state of the NumLock to [Off].

2.7.2 Full Screen Logo [Enabled]

[Enabled] Enables the full screen logo display feature.

[Disabled] Disables the full screen logo display feature.

Set this item to [Enabled] to use the ASUS MyLogo 2™ feature.

Post Report [5 sec]

This item appears only when the Full Screen Logo item is set to [Disabled] and allows you to

set the waiting time for the system to display the post report. Conguration options: [1 sec] [2

sec] [3 sec] [4 sec] [5 sec] [6 sec] [7 sec] [8 sec] [9 sec] [10 sec] [Until Press ESC]

2.7.3 Wait for ‘F1’ If Error [Enabled]

When this item is set to [Enabled], the system waits for the F1 key to be pressed when error

occurs. Conguration options: [Disabled] [Enabled]

Main

Ai Tweaker

Advanced Monitor Boot Tool

Exit

Select the keyboard NumLock state

→←: Select Screen ↑↓: Select Item

Enter: Select +/-: Change Opt. F1: General Help F2: Previous Values F3: Shortcut

F5: Optimized Defaults

F6: ASUS Ratio Boost F10: Save ESC: Exit

F12: Print Screen

UEFI BIOS Utility - Advanced Mode

Bootup NumLock State On

Full Screen Logo Enabled

Wait For ‘F1’ If Error Enabled

Option ROM Messages Force BIOS

Setup Mode EZ Mode

UEFI/Legacy Boot Enabled both...

PCI ROM Priority Legacy ROM

Boot Option Priorities

Boot Option #1 SATA: xxxxxxx

Boot Option #2 SATA: xxxxxxx

Boot Override

> SATA: xxxxxxxxxxxx

> Hard Drive BBS Priorities

> CD/DVD ROM Drive BBS Priorities

Chapter 2: BIOS information2-26

2.7.4 Option ROM Messages [Force BIOS]

[Force BIOS] The third-party ROM messages will be forced to display during the boot

sequence.

[Keep Current] The third-party ROM messages will be displayed only if the third-party

manufacturer had set the add-on device to do so.

2.7.5 Setup Mode [EZ Mode]

[Advanced Mode] Sets Advanced Mode as the default screen for entering the BIOS setup

program.

[EZ Mode] Sets EZ Mode as the default screen for entering the BIOS setup program.

2.7.6 UEFI/Legacy Boot [Enabled both UEFI and Legacy]

[Enable both UEFI and Legacy] Enables both UEFI and Legacy boot.

[Disable UEFI] Enables the Legacy boot, and disables the UEFI boot.

[Disable Legacy] Enables the UEFI booth, and disables the Legacy boot.

2.7.7 PCI ROM Priority [Legacy ROM]

[Legacy ROM] Launch Legacy ROM

[EFI Compatibe ROM] Launch UEFI Compatible ROM

2.7.8 Boot Option Priorities

These items specify the boot device priority sequence from the available devices. The number of device items that appears on the screen depends on the number of devices installed in the system.

• To select the boot device during system startup, press <F8> when ASUS Logo appears.

• To access Windows OS in Safe Mode, press <F8> after POST.

2.7.9 Boot Override

These items displays the available devices. The number of device items that appears on the screen depends on the number of devices installed in the system. Click an item to start booting from the selected device.

2-27ASUS P8B75-M LX

2.8 Tools menu

The Tools menu items allow you to congure options for special functions. Select an item

then press <Enter> to display the submenu.

2.8.1 ASUS EZ Flash 2 Utility

Allows you to run ASUS EZ Flash 2. Press [Enter] to launch the ASUS EZ Flash 2 screen.

For more details, see section 2.1.2 ASUS EZ Flash 2.

2.8.2 ASUS O.C. Prole

This item allows you to store or load multiple BIOS settings.

The Setup Prole Status items show Not Installed if no prole is created.

Label

Allows you to input the label of the setup prole.

Save to Prole

Allows you to save the current BIOS settings to the BIOS Flash, and create a prole. Key in a prole number from one to eight, press <Enter>, and then select Yes.

Load from Prole

Allows you to load the previous BIOS settings saved in the BIOS Flash. Key in the prole

number that saved your CMOS settings, press <Enter>, and then select Yes.

• DO NOT shut down or reset the system while updating the BIOS to prevent the system boot failure!

• We recommend that you update the BIOS le only coming from the same memory/CPU conguration and BIOS version.

Main

Ai Tweaker

Advanced Monitor Boot Tool

Exit

Be used to update BIOS

UEFI BIOS Utility - Advanced Mode

> ASUS EZ Flash 2 Utility

> ASUS O.C. Prole

> ASUS SPD Information

2.8.3 ASUS SPD Information

DIMM Slot # [Slot 1]

Displays the Serial Presence Detect (SPD) information of the DIMM module installed on the

selected slot. Conguration options: [DIMM_A1] [DIMM_B1]

Chapter 2: BIOS information2-28

2.9 Exit menu

The Exit menu items allow you to load the optimal default values for the BIOS items, and save or discard your changes to the BIOS items. You can access the EZ Mode from the Exit menu.

Load Optimized Defaults

This option allows you to load the default values for each of the parameters on the Setup

menus. When you select this option or if you press <F5>, a conrmation window appears.

Select Yes to load the default values.

Save Changes & Reset

Once you are nished making your selections, choose this option from the Exit menu to

ensure the values you selected are saved. When you select this option or if you press <F10>,

a conrmation window appears. Select Yes to save changes and exit.

Discard Changes & Exit

This option allows you to exit the Setup program without saving your changes. When you select this option or if you press <Esc>, a conrmation window appears. Select Yes to discard changes and exit.

ASUS EZ Mode

This option allows you to enter the EZ Mode screen.

Launch EFI Shell from lesystem device

This option allows you to attempt to launch the EFI Shell application (shellx64.e) from one of the available devices that have a lesystem.

Exit

Load Optimized Defaults

Save Changes & Reset

Discard Changes & Exit

ASUS EZ Mode

Launch EFI Shell from lesystem device

ASUS P8B75-M LX A-1

Appendices

Federal Communications Commission Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

• This device may not cause harmful interference.

• This device must accept any interference received including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed

and used in accordance with manufacturer’s instructions, may cause harmful interference

to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

•

Reorient or relocate the receiving antenna.

•

Increase the separation between the equipment and receiver.

•

Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

•

Consult the dealer or an experienced radio/TV technician for help.

The use of shielded cables for connection of the monitor to the graphics card is required

to assure compliance with FCC regulations. Changes or modications to this unit not expressly approved by the party responsible for compliance could void the user’s authority

to operate this equipment.

IC: Canadian Compliance Statement

Complies with the Canadian ICES-003 Class B specications. This device complies with RSS

210 of Industry Canada. This Class B device meets all the requirements of the Canadian interference-causing equipment regulations.

This device complies with Industry Canada license exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

Cut appareil numérique de la Classe B est conforme à la norme NMB-003 du Canada. Cet appareil numérique de la Classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

Cet appareil est conforme aux normes CNR exemptes de licence d’Industrie Canada. Le

fonctionnement est soumis aux deux conditions suivantes :

(1) cet appareil ne doit pas provoquer d’interférences et

(2) cet appareil doit accepter toute interférence, y compris celles susceptibles de provoquer

un fonctionnement non souhaité de l’appareil.

Notices

A-2 Appendices

VCCI: Japan Compliance Statement

VCCI Class B Statement

KC: Korea Warning Statement

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

This class B digital apparatus complies with Canadian ICES-003.

DO NOT throw the motherboard in municipal waste. This product has been designed to enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin indicates that the product (electrical and electronic equipment) should not be placed in municipal waste. Check local regulations for disposal of electronic products.

DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol of the crossed out wheeled bin indicates that the battery should not be placed in municipal waste.

REACH

Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) regulatory framework, we published the chemical substances in our products at ASUS REACH website at http://csr.asus.com/english/REACH.htm.

ASUS Recycling/Takeback Services

ASUS recycling and takeback programs come from our commitment to the highest standards for protecting our environment. We believe in providing solutions for you to be able to responsibly recycle our products, batteries, other components as well as the packaging materials. Please go to http://csr.asus.com/english/Takeback.htm for the detailed recycling information in different regions.

ASUS P8B75-M LX A-3

ASUS contact information

ASUSTeK COMPUTER INC.

Address 15 Li-Te Road, Peitou, Taipei, Taiwan 11259 Telephone +886-2-2894-3447 Fax +886-2-2890-7798 E-mail info@asus.com.tw Web site www.asus.com.tw

Technical Support

Telephone +86-21-38429911 Online support support.asus.com

ASUS COMPUTER INTERNATIONAL (America)

Address 800 Corporate Way, Fremont, CA 94539, USA Telephone +1-812-282-3777 Fax +1-510-608-4555 Web site usa.asus.com

Technical Support

Telephone +1-812-282-2787 Support fax +1-812-284-0883 Online support support.asus.com

ASUS COMPUTER GmbH (Germany and Austria)

Address Harkort Str. 21-23, D-40880 Ratingen, Germany Fax +49-2102-959911 Web site www.asus.de Online contact www.asus.de/sales

Technical Support

Telephone +49-1805-010923* Support Fax +49-2102-9599-11 Online support support.asus.com

* EUR 0.14/minute from a German xed landline; EUR 0.42/minute from a mobile phone.

A-4 Appendices

EC Declaration of Conformity

We, the undersigned,

Manufacturer:

ASUSTek COMPUTER INC.

Address, City:

No. 150, LI-TE RD., PEITOU, TAIPEI 112, TAIWAN R.O.C.

Country:

TAIWAN

Authorized representative in Europe:

ASUS COMPUTER GmbH

Address, City: HARKORT STR. 21-23, 40880 RATINGEN

Country:

GERMANY

declare the following apparatus:

Product name : Motherboard

Model name : P8B75-M LX

conform with the essential requirements of the following directives:

2004/108/EC-EMC Directive

EN 55022:2010

EN 61000-3-2:2006+ A1:2009+ A2:2009

EN 55013:2001+A1:2003+A2:2006

EN 55024:2010

EN 61000-3-3:2008

EN 55020:2007

1999/5/EC-R &TTE Directive

EN 300 328 V1.7.1(2006-10)

EN 300 440-1 V1.4.1(2008-05)

EN 300 440-2 V1.2.1(2008-03)

EN 301 511 V9.0.2(2003-03)

EN 301 908-1 V3.2.1(2007-05)

EN 301 908-2 V3.2.1(2007-05)

EN 301 893 V1.4.1(2005-03)

EN 302 544-2 V1.1.1(2009-01)

EN 50360:2001

EN 50371:2002

EN 50385:2002

EN 301 489-1 V1.8.1(2008-04)

EN 301 489-3 V1.4.1(2002-08)

EN 301 489-4 V1.3.1(2002-08)

EN 301 489-7 V1.3.1(2005-11)

EN 301 489-9 V1.4.1(2007-11)

EN 301 489-17 V2.1.1(2009-05)

EN 301 489-24 V1.4.1(2007-09)

EN 302 326-2 V1.2.2(2007-06)

EN 302 326-3 V1.3.1(2007-09)

EN 301 357-2 V1.3.1(2006-05)

EN 302 623 V1.1.1(2009-01)

2006/95/EC-LVD Directive

EN 60950-1 / A11:2009

EN 60950-1 / A12:2011

EN 60065:2002+A1:2006+A11:2008

EN 60065:2002 / A12:2011

2009/125/EC-ErP Directive

Regulation (EC) No. 1275/2008

EN 62301:2005

Regulation (EC) No. 642/2009

EN 62301:2005

Regulation (EC) No. 278/2009

EN 62301:2005

Ver. 111121

CE marking

Declaration Date: Apr. 25, 2012

Year to begin affixing CE marking:2012

Position : CEO

Name : Jerry Shen

Signature : __________

EC conformit

markin

DECLARATION OF CONFORMITY

Per FCC Part 2 Section 2. 1077(a)

Responsible Party Name: Asus Computer International

Address: 800 Corporate Way, Fremont , CA 94539.

Phone/Fax No: (510)739-3777/(510)608-4555

hereby declares that the product

Product Name : Motherboard

Model Number : P8B75-M LX

Conforms to the following specifications:

FCC Part 15, Subpart B, Unintentional Radiators

FCC Part 15, Subpart C, Intentional Radiators

FCC Part 15, Subpart E, Intentional Radiators

Supplementary Information:

This device complies with part 15 of the FCC Rules. Operation is subject to

the following two conditions: (1) This device may not cause harmful

interference, and (2) this device must accept any interference received,

including interference that may cause undesired operation.

Representative Person’s Name : Steve Chang / President

Signature :

Dat e : Apr. 25, 2012

Ver. 110101

Asus P8B75-M LX User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety information

About this guide

Chapter 1

Product introduction

1.3 Special features

1.3.1 Product highlights

1.1 Welcome!

1.2 Package contents

1.3.2 Innovative ASUS features

1.4 Before you proceed

1.5 Motherboard overview

1.5.1 Placement direction

1.5.2 Screw holes

1.5.3 Motherboard layout

1.5.4 Layout contents

1.6 Central Processing Unit (CPU)

1.6.1 Installing the CPU

1.6.2 CPU heatsink and fan assembly installation

1.7 System memory

1.7.1 Overview

1.7.3 Installing a DIMM

1.7.4 Removing a DIMM

1.8 Expansion slots

1.8.1 Installing an expansion card

1.8.3 PCI slot

1.8.4 PCI Express 2.0 x1 slots

1.8.5 PCI Express 3.0/2.0 x16 slot

1.9 Jumpers

1.10 Connectors

1.10.1 Rear panel connectors

1.10.2 Internal connectors

1.11 Onboard LEDs

1.13 Software support

1.13.1 Installing an operating system

1.13.2 Support DVD information

1.13.3 Intel® SBA support

Chapter 2

BIOS information

2.1.1 ASUS Update utility

2.1 Managing and updating your BIOS

2.1.2 ASUS EZ Flash 2

2.1.3 ASUS CrashFree BIOS 3 utility

2.1.4 ASUS BIOS Updater

2.2 BIOS setup program

2.3.1 System Language [English]

2.3.2 System Date [Day xx/xx/xxxx]

2.3.3 System Time [xx:xx:xx]

2.3.4 Security

2.3 Main menu

2.4 Ai Tweaker menu

2.4.1 ASUS MultiCore Enhancement [Enabled].

2.4.2 CPU bus speed: DRAM speed ratio mode [Auto]

2.4.3 Memory Frequency [Auto]

2.4.4 iGPU Max. Frequency [Auto]

2.4.5 GPU Boost [OK]

2.4.6 DRAM Timing Control

2.4.7 CPU Power Management

2.5 Advanced menu

2.5.8 APM

2.5.9 Network Stack

2.6 Monitor menu

2.6.3 CPU Q-Fan Control [Enabled]

2.6.4 Chassis Q-Fan Control [Enabled]

2.6.5 CPU Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage

2.6.6 Anti Surge Support [Enabled]

2.7 Boot menu

2.7.1 Bootup NumLock State [On]

2.7.2 Full Screen Logo [Enabled]

2.7.3 Wait for ‘F1’ If Error [Enabled]

2.7.4 Option ROM Messages [Force BIOS]

2.7.5 Setup Mode [EZ Mode]

2.7.6 UEFI/Legacy Boot [Enabled both UEFI and Legacy]

2.7.7 PCI ROM Priority [Legacy ROM]

2.7.8 Boot Option Priorities

2.7.9 Boot Override

2.8 Tools menu