Asus B75M-PLUS User Manual

B75M-PLUS

Motherboard

E8250
First Edition

April 2013

Copyright © 2013 ASUSTeK COMPUTER INC. All Rights Reserved.

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”).

Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the

product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS

OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
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DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
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Products and corporate names appearing in this manual may or may not be registered trademarks or

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Offer to Provide Source Code of Certain Software

This product contains copyrighted software that is licensed under the General Public License (“GPL”),
under the Lesser General Public License Version (“LGPL”) and/or other Free Open Source Software
Licenses. Such software in this product is distributed without any warranty to the extent permitted by the
applicable law. Copies of these licenses are included in this product.

Where the applicable license entitles you to the source code of such software and/or other additional data,
you may obtain it for a period of three years after our last shipment of the product, either

(1) for free by downloading it from http://support.asus.com/download
or
(2) for the cost of reproduction and shipment, which is dependent on the preferred carrier and the location

where you want to have it shipped to, by sending a request to:

ASUSTeK Computer Inc.
Legal Compliance Dept.
15 Li Te Rd.,
Beitou, Taipei 112
Taiwan

In your request please provide the name, model number and version, as stated in the About Box of the
product for which you wish to obtain the corresponding source code and your contact details so that we
can coordinate the terms and cost of shipment with you.

The source code will be distributed WITHOUT ANY WARRANTY and licensed under the same license as
the corresponding binary/object code.

This offer is valid to anyone in receipt of this information.
ASUSTeK is eager to duly provide complete source code as required under various Free Open Source

Software licenses. If however you encounter any problems in obtaining the full corresponding source
code we would be much obliged if you give us a notication to the email address [e-mail], stating
the product and describing the problem (please DO NOT send large attachments such as source code
archives, etc. to this email address).

ii

Contents

Safety information ...................................................................................................... iv

About this guide ......................................................................................................... iv

Package contents ....................................................................................................... vi

B75M-PLUS specications summary ....................................................................... vi

Chapter 1: Product introduction

1.1 Before you proceed ...................................................................................... 1-1

1.2 Motherboard overview .................................................................................

1.3 Central Processing Unit (CPU) ....................................................................

1.4 System memory ............................................................................................

1.5 Expansion slots ..........................................................................................

1.6 Jumpers

1.7 Connectors ..................................................................................................

1.9 Onboard LEDs ............................................................................................

1.10 Software support ........................................................................................

....................................................................................................... 1-11

Chapter 2: BIOS information

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

2.2 BIOS setup program .....................................................................................

2.3 Main menu .....................................................................................................

2.4 Ai Tweaker menu ........................................................................................

2.5 Advanced menu ..........................................................................................

2.6 Monitor menu ..............................................................................................

2.7 Boot menu ...................................................................................................

2.8 Tools menu ..................................................................................................

2.9 Exit menu ....................................................................................................

1-10

1-13

1-21

1-22

2-11

2-17

2-24

2-27

2-33

2-34

1-1

1-3

1-7

2-6

2-9

Appendices

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

iii

Safety information

Electrical safety

To prevent electrical shock hazard, disconnect the power cable from the electrical 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 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.

iv

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.

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

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

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

Typography

Bold text Indicates a menu or an item to select.

Italics

<Key> Keys enclosed in the less-than and greater-than sign

<Key1> + <Key2> + <Key3> If you must press two or more keys simultaneously, the key

Used to emphasize a word or a phrase.

means that you must press the enclosed key.

Example: <Enter> means that you must press the Enter or
Return key.

names are linked with a plus sign (+).

v

Package contents

Check your motherboard package for the following items.

Motherboard ASUS B75M-PLUS motherboard

Cables

Accessories 1 x I/O Shield

Application DVD Support DVD

Documentation User Guide

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

• The illustrated items above are for reference only. Actual product specications may

vary with different models.

1 x Serial ATA 6.0 Gb/s cable
1 x Serial ATA 3.0 Gb/s cable

B75M-PLUS specications summary

CPU LGA1155 socket for Intel® 3rd / 2nd Generation Core i7 / i5 / i3, Pentium®

and Celeron® 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 4 x DIMM, max. 32GB, DDR3 2200 (O.C.) / 2133 (O.C.) / 2000 (O.C.) /

1866 (O.C.) / 1600 / 1333/ 1066 MHz, non-ECC,un-buffered memory

Dual-channel memory architecture

Supports Intel® Extreme Memory Prole (XMP)

* The maximum 32GB memory capacity can be supported with 8GB (or higher).

ASUS will update the QVL once the DIMMs are available in the market.

** Due to the CPU behavior, DDR3 2133/1866MHz memory module will run at DDR3

2000/1800MHz frequency.

*** Intel® 3rd Generation Core processors support DDR3 1600Mhz and higher

memory frequency.

**** Refer to www.asus.com for the latest Memory QVL (Qualied Vendors List).

Graphics Integrated graphics processor

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

- Supports HDMI with max.resolution of 1920 x 1200 @60Hz

- 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

1 x PCI Express 2.0 x1 slot

1 x PCI slot

* Intel® 3rd Generation Core processors support PCIe 3.0.

(continued on the next page)

vi

B75M-PLUS specications summary

Storage Intel® B75 Express Chipset:

LAN

Audio Realtek® ALC887-VD High Denition Audio CODEC*

USB 4 x USB 3.0 ports (2 ports at midboard, 2 ports at back panel)

ASUS unique
features

- 5 x Serial ATA 3.0 Gb/s connectors

- 1 x Serial ATA 6.0 Gb/s connector

Realtek® 8111G Gigabit LAN controller

- 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.

8 x USB 2.0 ports (4 ports at midboard, 4 ports at back panel)

ASUS DIGI+VRM

- ASUS DIGI+VRM: Digital Power Design for the CPU and iGPU

- ASUS 3+1 Phase Power Design

ASUS Eclusive Features

- ASUS EPU

- ASUS USB 3.0 Boost

- Network iControl

- AI Suite II

- AI Charger

- Anti-Surge

- ASUS UEFI BIOS EZ Mode

- GPU Boost

- 100% Solid capacitors

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 port (purple)

1 x PS/2 mouse port (green)

1 x HDMI port

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 ports

3 x Audio jacks

(continued on the next page)

vii

B75M-PLUS specications summary

Internal connectors/
switches/ buttons

BIOS features 64 Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.7, ACPI

Manageability

Support DVD Drivers

Form factor

Specications are subject to change without notice.

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

1 x SATA 6.0 Gb/s connector

5 x SATA 3.0 Gb/s connectors

1 x COM port connector

1 x LPT connector

1 x S/PDIF Out header

1 x 4-pin CPU fan connector

1 x 4-pin Chassis fan connectors

1 x Front panel audio connector (AAFP)

1 x System panel connector

1 x 24-pin ATX power connector

1 x 4-pin ATX 12V power connector

1 x Speaker connector

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

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

ASUS utilities

ASUS Update

Anti-virus software (OEM version)

MicroATX form factor: 8.9”x 7.8” (22.6cm x 19.8cm)

viii

Product introduction

1

1.1 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.

1.2 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.

1.2.1 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.

1.2.2 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.

ASUS B75M-PLUS

1-1

B75M-PLUS

Place this side towards

B75M-PLUS

PCIEX16

PCIEX1_1

PCI1

F_PANEL

SPEAKER

CLRTC

SPDIF_OUT

LPT

USBPWF

KB_USBPWB

USB56 USB78

AAFP

ATX12V

EATXPWR

CPU_FAN

CHA_FAN

BATTERY

Super

I/O

ALC
887

RTL

8111G

DIGI

+VRM

8MB
BIOS

SB_PWR

22.6cm(8.9in)

LGA1155

Intel

®

B75

DDR3 DIMM_A1 (64bit, 240-pin module)

DDR3 DIMM_A2 (64bit, 240-pin module)

DDR3 DIMM_B1 (64bit, 240-pin module)

DDR3 DIMM_B2 (64bit, 240-pin module)

SATA3G_4

SATA3G_5

SATA6G_1 SATA3G_1 SATA3G_2

SATA3G_3

AUDIO

KBMS

LAN1_USB12

USB3_12

USB34

HDMI

19.8cm(7.8in)

DVI_VGA

COM

USB3_34

432 31 5

1

10 9612 1113141516

17

6

7

8

18

the rear of the chassis

1.2.3 Motherboard layout

Chapter 1: Product introduction

1-2

1.2.4 Layout contents

B75M-PLUS

B75M-PLUS CPU socket LGA1155

Connectors/Jumpers/Slots/LED Page

1. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 1-15

2. Keyboard and USB device wake-up (KB_USBPWB) 1-12

3. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN) 1-16

4. Intel® LGA1155 CPU socket 1-3

5. DDR3 DIMM slots 1-7

6. Intel® B75 Serial ATA 3.0Gb/s connectors (7-pin SATA3G_1~5 [blue]) 1-18

7. Intel® B75 Serial ATA 6.0Gb/s connector (7-pin SATA6G_1 [gray]) 1-18

8. Speaker connector (4-pin SPEAKER) 1-17

9. USB 3.0 connector (20-1 pin USB3_34) 1-19

10. System panel connector (10-1 pin F_PANEL) 1-17

11. USB device wake-up (USBPWF) 1-12

12. USB 2.0 connectors (10-1 pin USB56, USB78) 1-19

13. Serial port connectors (10-1 pin COM) 1-20

14. Clear RTC RAM (3-pin CLRTC) 1-11

15. LPT connector (26-1 pin LPT) 1-21

16. Front panel audio connector (10-1 pin AAFP) 1-15

17. Digital audio connector (4-1 pin SPDIF_OUT) 1-20

18. Onboard LED (SB_PWR) 1-21

1.3 Central Processing Unit (CPU)

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

Unplug all power cables before installing the CPU.

ASUS B75M-PLUS

1-3

• Upon purchase of the motherboard, ensure that the PnP cap is on the socket and

A

B

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.

1.3.1 Installing the CPU

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

1

1-4

2

3

Chapter 1: Product introduction

A

B

C

4

5

1.3.2 CPU heatsink and fan assembly installation

ASUS B75M-PLUS

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

1-5

To install the CPU heatsink and fan assembly

1

A

B

B

A

3

2

4

To uninstall the CPU heatsink and fan assembly

1

2

B

A

B

1-6

A

Chapter 1: Product introduction

1.4 System memory

DIMM_A1

DIMM_A2

DIMM_B1

DIMM_B2

B75M-PLUS

B75M-PLUS 240-pin DDR3 DIMM sockets

1.4.1 Overview

This motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Module
(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 and DIMM_A2

Channel B DIMM_B1 and DIMM_B2

1.4.2 Memory congurations

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

• 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.

• According to Intel CP specication, DIMM voltage below 1.65V is is recommended to

protect the CPU.

• Always install DIMMs with the same CAS latency. For optimal compatibility, we
recommend that you install memory modules of the same version or date code (D/C)
from the same vendor. Check with the retailer to get the correct memory modules.

• Due to the memory address limitation on 32-bit Windows
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

- Install a 64-bit Windows

motherboard.

ASUS B75M-PLUS

®

OS, when you install 4GB

®

OS if you want to install 4GB or more on the

®

OS.

1-7

• For more details, refer to the Microsoft® support site at http://support.microsoft.com/
kb/929605/en-us

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

• Memory modules with memory frequency higher than 2133 MHz and its corresponding
timing or the loaded X.M.P. Prole is not the JEDEC memory standard. The stability

and compatibility of these memory modules depend on the CPU’s capabilities and
other installed devices.

• The maximum 32GB memory capacity can be supported with 8GB or above DIMMs.
ASUS will update the memory QVL once the DIMMs are available in the market.

• 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 (4 DIMMs) or overclocking condition.

1.4.3 Installing a DIMM

1

1-8

Chapter 1: Product introduction

2

3

To remove a DIMM

ASUS B75M-PLUS

B

A

1-9

1.5 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.

1.5.1 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.

1.5.2 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.

1.5.3 PCI slot

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

comply with PCI specications.

1.5.4 PCI Express 2.0 x1 slot

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

comply with the PCI Express specications.

1-10

Chapter 1: Product introduction

1.5.5 PCI Express 3.0/2.0 x1 slot

B75M-PLUS

B75M-PLUS Clear RTC RAM

1 2

2 3

Normal

(Default)

Clear RTC

CLRTC

This motherboard supports one PCI Express 3.0/2.0 graphics card that comply with the PCI

Express specications.

Intel® 3rd Generation Core processors support PCIe 3.0.

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 8111G controller shared - - - - - - -

1.6 Jumpers

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.

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 <
enter data.

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

ASUS B75M-PLUS

Del> key during the boot process and enter BIOS setup to re-

1-11

• If the steps above do not help, remove the onboard battery and move the jumper

B75M-PLUS

+5V +5VSB

(Default)

KB_USBPWB

B75M-PLUS Keyboard and USB device wake up

1 2

2 3

B75M-PLUS

21

2 3

+5V

(Default)

+5VSB

USBPWF

B75M-PLUS USB device wake up

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.

2. Keyboard and USB device wake-up (KB_USBPWB)

This jumper allows you to enable or disable the P/S 2 device wake-up feature. When
you set this jumper to pins 2-3 (+5VSB), you can wake up the computer by pressing a
key on the P/S 2 keyboard or by clicking on the P/S 2 mouse. This feature requires an
ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding
setting in the BIOS.

3. USB device wake-up (USBPWF)

Set this jumper to +5V to wake up the computer from S1 sleep mode (CPU stopped,
DRAM refreshed, system running in low power mode) using the connected USB
devices. Set to +5VSB to wake up from S3 and S4 sleep modes (no power to CPU,
DRAM in slow refresh, power supply in reduced power mode).

1-12

Chapter 1: Product introduction

• The USB device wake-up feature requires a power supply that can provide 500mA on

4 53

6811 7

1

12

2

10 9

the +5VSB lead for each USB port; otherwise, the system would not power up.

• The total current consumed must NOT exceed the power supply capability (+5VSB)
whether under normal condition or in sleep mode.

1.7 Connectors

1.7.1 Rear panel connectors

1. PS/2 mouse port. This port is for a PS/2 mouse.

2. Video Graphics Adapter (VGA) port.

VGA-compatible devices.

3. LAN (RJ-45) port.

This port allows Gigabit connection to a Local Area Network (LAN)

through a network hub.

LAN port LED indications

This 15-pin port is for a VGA monitor or other

Activity/Link LED Speed LED
Status Description Status Description

OFF No link OFF 10Mbps connection
ORANGE Linked ORANGE 100Mbps connection
BLINKING Data activity GREEN 1Gbps connection

4. Line In port (light blue).

This port connects to the tape, CD, DVD player, or other

Activity Link

LED

audio sources.

5. Line Out port (lime).

8-channel congurations, the function of this port becomes Front Speaker Out.

6. Microphone port (pink)

This port connects to a headphone or a speaker. In the 4, 6 and

. This port connects to a microphone.

ASUS B75M-PLUS

LAN port

Speed

LED

1-13