ASUS M5A78L-M LX3 PLUS, M5A78L-M LX3 User Manual

M5A78L-M LX3 Series
• M5A78L-M LX3
• M5A78L-M LX3 PLUS
Motherboard
E7475 First Edition
June 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”).
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), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY 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, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or
copyrights of their respective companies, and are used only for identication or explanation and to the owners’ benet, without intent to infringe.
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 gpl@asus.com, 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 ...................................................................................................... vi
About this guide ......................................................................................................... vi
M5A78L-M LX3 Series specications summary .................................................... viii
Package contents ........................................................................................................ x
Chapter 1: Product introduction
1.1 Special features ............................................................................................ 1-1
1.1.1 Product highlights ...........................................................................1-1
1.1.2 ASUS Exclusive Features ............................................................... 1-2
1.2 Before you proceed ...................................................................................... 1-3
1.3 Motherboard overview .................................................................................1-4
1.3.1 Placement direction ........................................................................1-4
1.3.2 Screw holes ....................................................................................1-4
1.3.3 Motherboard layout .........................................................................1-5
1.3.4 Layout contents ...............................................................................1-6
1.4 Central Processing Unit (CPU) .................................................................... 1-6
1.4.1 CPU installation ..............................................................................1-7
1.4.2 CPU heatsink and fan assembly installation ................................... 1-8
1.5 System memory .......................................................................................... 1-10
1.5.1 Overview .......................................................................................1-10
1.5.2 Memory congurations .................................................................. 1-11
1.5.3 Installing a DIMM ..........................................................................1-15
1.6 Expansion slots .......................................................................................... 1-16
1.6.1 Installing an expansion card .........................................................1-16
1.6.2 Conguring an expansion card ..................................................... 1-16
1.6.3 PCI slot .........................................................................................1-16
1.6.4 PCI Express x1 slot .......................................................................1-16
1.6.5 PCI Express x16 slot .....................................................................1-16
1.7 Jumpers.......................................................................................................1-17
1.8 Connectors ..................................................................................................1-19
1.8.1 Rear panel ports ...........................................................................1-19
1.8.2 Internal connectors .......................................................................1-20
1.9 Software support ........................................................................................ 1-25
1.9.1 Installing an operating system ......................................................1-25
1.9.2 Support DVD information ..............................................................1-25
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 utility ...................................................................2-2
iii
2.1.3 ASUS CrashFree BIOS 3 ................................................................2-3
2.2 BIOS setup program .....................................................................................2-4
2.2.1 BIOS menu screen ..........................................................................2-5
2.2.2 Menu bar ......................................................................................... 2-5
2.2.3 Navigation keys ...............................................................................2-5
2.2.4 Menu items .....................................................................................2-6
2.2.5 Submenu items ...............................................................................2-6
2.2.6 Conguration elds ......................................................................... 2-6
2.2.7 Pop-up window ...............................................................................2-6
2.2.8 Scroll bar ......................................................................................... 2-6
2.2.9 General help ...................................................................................2-6
2.3 Main menu ..................................................................................................... 2-7
2.3.1 System Time [xx:xx:xx] ...................................................................2-7
2.3.2 System Date [Day xx/xx/xxxx] .........................................................2-7
2.3.3 SATA3G_1~4 ..................................................................................2-7
2.3.4 SATA Conguration ......................................................................... 2-8
2.3.5 System Information .........................................................................2-8
2.4 Advanced menu ............................................................................................ 2-9
2.4.1 JumperFree Conguration .............................................................. 2-9
2.4.2 CPU Conguration ........................................................................2-12
2.4.3 Chipset .......................................................................................... 2-13
2.4.4 Onboard Devices Conguration ....................................................2-14
2.4.5 PCIPnP .........................................................................................2-14
2.4.6 USB Conguration ........................................................................ 2-15
2.5 Power menu ................................................................................................2-16
2.5.1 Suspend Mode [Auto] ...................................................................2-16
2.5.2 ACPI 2.0 Support [Enabled] .......................................................... 2-16
2.5.3 ACPI APIC Support [Enabled] .......................................................2-16
2.5.4 APM Conguration ........................................................................ 2-16
2.5.5 HW Monitor Conguration .............................................................2-17
2.5.6 Anti Surge Support [Enabled] .......................................................2-18
2.6 Boot menu ................................................................................................... 2-19
2.6.1 Boot Device Priority ......................................................................2-19
2.6.2 Boot Settings Conguration .......................................................... 2-19
2.6.3 Security .........................................................................................2-20
2.7 Tools menu .................................................................................................. 2-22
2.7.1 ASUS EZ Flash 2 .......................................................................... 2-22
2.7.2 ASUS O.C. Prole .........................................................................2-22
2.8 Exit menu ....................................................................................................2-23
iv
Appendices
Notices ..................................................................................................................... A-1
ASUS contact information ...................................................................................... A-3
v

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.
vi
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 (+).
vii
M5A78L-M LX3 Series specications summary
CPU AMD
Chipset AMD® 760G(780L) / SB710
Front side bus Up to 5200 MT/s HyperTransport™ 3.0 interface
Memory Dual-channel memory architecture
Graphics Integrated ATI Radeon™ HD 3000 GPU
Expansion slots 1 x PCIe 2.0 x16 slot
Storage / RAID 4 x Serial ATA 3Gb/s connectors support RAID 0, 1, 10 and JBOD
LAN Qualcomm Atheros Gb LAN
Audio Realtek® ALC887 8-channel* High Denition Audio CODEC
USB Supports up to 8 USB 2.0/1.1 ports (4 ports at mid-board, 4 ports at the
ASUS Unique Features
®
Socket AM3+ for AMD® FX™ / Phenom™ II / Athlon™ II /
Sempron™ 100 series processors
AMD® Cool ‘n’ Quiet™ Technology
Supports AMD® AM3/AM3+ CPU up to 95W
* Refer to www.asus.com for the AMD® CPU support list
2 x 240-pin DIMM slots support maximum 16GB unbuffered ECC and non-
ECC DDR3 1866 / 1600 / 1333 / 1066MHz memory modules
* AMD® FX™ Series CPU on this motherboard supports up to DDR3
1866MHz as its standard memory frequency.
** Due to CPU specication, AMD® AM3 CPUs on this motherboard support
up to DDR3 1333MHz.
*** Refer to www.asus.com for the latest Memory QVL (Qualied Vendors
List).
**** Use a 64-bit Windows® OS if you want to install 4GB or more memory
on the motherboard.
Supports max. shared memory of 1GB
Supports RGB with max. resolution of 2560 x 1440 (@75Hz)
Supports Microsoft® DirectX 10
Supports Hybrid CrossFireXTM (For Windows Vista or later versions)
* Refer to www.amd.com for the discrete GPUs that support Hybrid
CrossFireX™.
1 x PCIe 2.0 x1 slot
1 x PCI slot
* Use the chassis with HD audio module in the front panel to support 8-
channel audio output.
back panel)
ASUS MyLogo 2
ASUS EZ Flash 2
ASUS EPU
ASUS Anti-Surge
ASUS CrashFree BIOS 3
ASUS Fan Xpert
ASUS Core Unlocker
viii
(continued on the next page)
M5A78L-M LX3 Series specications summary
Special features 100% All high quality conductive polymer capacitors (M5A78L-M LX3
Back panel I/O ports 1 x PS/2 Keyboard port
Internal I/O connectors 2 x USB 2.0 connectors support additional 4 USB 2.0 ports
BIOS 16Mb Flash ROM, AMI BIOS, PnP, DMI v2.0, WfM2.0, ACPI v2.0a,
Support DVD Drivers
Form factor MicroATX form factor: 9.6 in x 7.4 in (24.4 cm x 18.8 cm)
PLUS R2.0 only)
1 x PS/2 Mouse port
1 x COM port
1 x D-Sub port
1 x LAN (RJ-45) port
4 x USB 2.0 ports
3 x Audio jacks
4 x SATA 3.0Gb/s connectors
1 x CPU fan connector
1 x Chassis fan connector
1 x Front panel audio connector
1 x Speaker connector
1 x System panel connector
1 x 24-pin EATX power connector
1 x 4-pin ATX 12V power connector
SM BIOS 2.7
ASUS Update
ASUS PC Probe II
Anti-Virus software (OEM version)
Specications are subject to change without notice.
ix

Package contents

M5A78L-M LX3 PLUS
PCIEX16
PCIEX1_1
PCI1
USB78 USB56
AAFP
ATX12V
EATXPWR
CPU_FAN
Lithium Cell
CMOS Power
Super
I/O
ALC
887-VD2
AR 8161
ICS
9LPRS483
KBMS
16Mb BIOS
SB_PWR
CLRTC
USBPW5-8
USBPW1-4
KBPWR
AMD
®
RS780L
AMD
®
SB710
DDR3 DIMM_A1 (64bit, 240-pin module)
SOCKET AM3+
DDR3 DIMM_B1 (64bit, 240-pin module)
SATA3G_2 SATA3G_4
SATA3G_1 SATA3G_3
AUDIO
LAN1_USB12
USB34
CHA_FAN
SPEAKER
EPU
F_PANEL
VGA COM1
User Manual
Check your motherboard package for the following items.
ASUS M5A78L-M LX3 Series motherboard 2 x Serial ATA 3.0 Gb/s cables
1 x I/O Shield User Guide Support DVD
x
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.
Product introduction
1

1.1 Special features

1.1.1 Product highlights

AMD® FX™ / Phenom™ II / Athlon™ II / Sempron™ 100 series CPU support
This motherboard supports AMD® Socket AM3+ multi-core processors with unique L3 cache and delivers better overclocking capabilities with less power consumption. It features dual-channel DDR3 memory support and accelerates data transfer rate up to 5200MT/s via HyperTransport™ 3.0-based system bus. This motherboard also supports AMD® CPUs in the new 32nm manufacturing process.
HyperTransport™ 3.0 support
HyperTransport™ 3.0 technology provides 2.6 times more bandwidth than HT1.0 that
radically improves system efciency for a smoother and faster computing environment.
AMD® Cool ‘n’ Quiet Technology
This motherboard supports the AMD® Cool ‘n’ Quiet technology which monitors system operation and automatically adjusts CPU voltage and frequency for a cool and quiet operating environment.
Dual-Channel DDR3 1866 support
This motherboard supports DDR3 memory that features data transfer rates of 1866 /1600
/1333/1066 MHz to meet the higher bandwidth requirements of the latest operating system,
3D graphics, multimedia, and Internet applications.
Hybrid CrossFireX™ support
ATI Hybrid CrossFireX™ technology greatly boosts graphics performance with an onboard GPU and a discrete GPU.
* Hybrid CrossFireX™ is supported by Windows® Vista or later versions only.
** Refer to www.amd.com for the discrete GPUs that support Hybrid CrossFireX™.
Gigabit LAN solution
The onboard LAN controller is a highly integrated Gb LAN controller. It is enhanced with an
ACPI management function to provide efcient power management for advanced operating
systems.
Serial ATA 3Gb/s technology and RAID support
This motherboard supports hard drives based on the Serial ATA (SATA) 3Gb/s storage
specication, delivering enhanced scalability and doubling the bus bandwidth for high-speed data retrieval and save. It also supports RAID 0, RAID 1, and RAID 0+1 congurations for
Serial ATA hard drives.
ASUS M5A78L-M LX3 Series
1-1
100% All High-quality Conductive Polymer Capacitors (M5A78L-M LX3 PLUS only)
This motherboard uses all high-quality conductive polymer capacitors for durability, improved lifespan, and enhanced thermal capacity.

1.1.2 ASUS Exclusive Features

Core Unlocker
ASUS Core Unlocker simplies the activation of a latent AMD® CPU-with just pressing a key.
Enjoy an instant performance boost by simply unlocking the extra cores, without performing complicated BIOS changes.
ASUS Anti-Surge Protection
This special design protects expensive devices and the motherboard from damage caused by power surges from switching power supply unit (PSU).
ASUS EPU
ASUS EPU is a unique power saving technology that detects the current system loadings and adjusts the power consumption in real time.
ASUS EZ Flash 2
ASUS EZ Flash 2 is a user-friendly utility that allows you to update the BIOS without using a
bootable oppy disk or an OS-based utility.
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 a USB ash disk that contains the BIOS le.
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.
1-2
Chapter 1: Product introduction

1.2 Before you proceed

M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS Onboard LED
SB_PWR
ON
Standby Power Powered Off
OFF
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, switch off the ATX power supply and detach its power cord. Failure to do so may cause severe damage to the motherboard, peripherals, or components.
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.
ASUS M5A78L-M LX3 Series
1-3

1.3 Motherboard overview

M5A78L-M LX3 PLUS

1.3.1 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.

1.3.2 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.
1-4
Chapter 1: Product introduction

1.3.3 Motherboard layout

M5A78L-M LX3 PLUS
PCIEX16
PCIEX1_1
PCI1
USB78 USB56
AAFP
ATX12V
EATXPWR
CPU_FAN
Lithium Cell
CMOS Power
Super
I/O
ALC
887-VD2
AR
8161
ICS
9LPRS483
KBMS
16Mb BIOS
SB_PWR
CLRTC
USBPW5-8
USBPW1-4
KBPWR
18.8cm(7.4in)
24.4cm(9.6in)
AMD
®
RS780L
AMD
®
SB710
DDR3 DIMM_A1 (64bit, 240-pin module)
SOCKET AM3+
DDR3 DIMM_B1 (64bit, 240-pin module)
SATA3G_2 SATA3G_4
SATA3G_1 SATA3G_3
AUDIO
LAN1_USB12
USB34
CHA_FAN
SPEAKER
EPU
F_PANE
L
VGA COM1
31 53 42 6
11 1 913 12
4
7
10
8
7
M5A78L-M LX3 Series motherboards include M5A78L-M LX3 PLUS and M5A78L-M LX3 models. The package contents vary from models. The layout illustrations in this user guide are for M5A78L-M LX3 PLUS only.
ASUS M5A78L-M LX3 Series
1-5

1.3.4 Layout contents

M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS CPU socket AM3+
Connectors/Jumpers/Slots/LED Page
1. USB device wake-up (3-pin USBPW 1-4, USBPW 5-8) 1-18
2. Keyboard power (3-pin KBPWR) 1-18
3. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 1-21
4. CPU and chassis fan connectors (4-pin CPU_FAN and 3-pin CHA_FAN) 1-24
5. AMD CPU socket 1-6
6. DDR3 DIMM slots 1-10
7. SATA 3.0Gb/s connectors (7-pin SATA3G_1~4) 1-22
8. Standby power LED (SB_PWR) 1-3
9. System panel connector (10-1 pin F_PANEL) 1-23
10. Speaker connector (4-pin SPEAKER) 1-23
11. USB 2.0 connectors (10-1 pin USB56, USB78) 1-24
12. Clear RTC RAM (3-pin CLRTC) 1-17
13. Front panel audio connector (10-1 pin AAFP) 1-20

1.4 Central Processing Unit (CPU)

This motherboard comes with an AM3+ socket designed for FX™ / Phenom™ II / Athlon™ II / Sempron™ 100 series processors.
The AM3+ socket has a different pinout from the AM2+/AM2 socket. Ensure that you use a
CPU designed for the AM3+ socket. The CPU ts in only one correct orientation. DO NOT
force the CPU into the socket to prevent bending the pins and damaging the CPU!
1-6
Chapter 1: Product introduction

1.4.1 CPU installation

1
2
43
ASUS M5A78L-M LX3 Series
1-7

1.4.2 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
2
53 4
1-8
Chapter 1: Product introduction
To uninstall the CPU heatsink and fan assembly
1
3
2
4
5
ASUS M5A78L-M LX3 Series
1-9
M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS 240-pin DDR3 DIMM sockets
DIMM_A1
DIMM_B1

1.5 System memory

1.5.1 Overview

This motherboard comes with two 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
1-10
Chapter 1: Product introduction
1.5.2 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.
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® 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:
- Install a maximum of 3GB system memory if you are using a 32-bit Windows
OS.
- Use a 64-bit Windows® OS if you want to install 4GB or more memory on the
motherboard.
This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less.
M5A78L-M LX3 Series Motherboard Qualied Vendors Lists (QVL)
DDR3-1866MHz capability
Vendors Part No. Size
KHX1866C9D3T1K3/
KINGSTON
6GX(XMP) OCZ OCZ3G1866LV4GK 4GB(2 x 2GB) DS - - 10-10-10-27 1.65V • • 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 F3-14900CL9Q-8GBXL(XMP) 8GB(2GBx4) DS - - 9-9-9-24 1.6V
6GB(3 x 2GB) DS - - - 1.65V •
SS/DSChip
Brand
Chip
Timing Voltage
NO.
DIMM socket support (Optional) 1 DIMM* 2 DIMMs*
®
ASUS M5A78L-M LX3 Series
1-11
DDR3-1600MHz capability
Vendors Part No. Size
A-Data AD31600E001GM(O)U3K 3GB(3 x 1GB) SS - - 8-8-8-24 1.65V-1.85V •
A-Data
A-Data AX3U1600GC4G9-2G(XMP) 8GB(2 x 4GB) DS - - 9-9-9-24 1.55V-1.75V • • CORSAIR CMX4GX3M2A1600C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 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 CMX8GX3M4A1600C9(XMP) 8GB(4 x 2GB) DS - - 9-9-9-24 1.65V
G.SKILL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
KINGMAX
KINGSTON KHX1600C9AD3/2G 2GB DS - - - 1.65V
KINGSTON
KINGSTON KHX1600C9D3P1K2/4G 4GB(2 x 2GB) SS - - - 1.5V • OCZ OCZ3G1600LV4GK 4GB(2 x 2GB) DS - - 8-8-8-24 1.65V • Super Talent WA160UX6G9 6GB(3 x 2GB) DS - - 9 - • GEIL GET316GB1600C9QC(XMP) 16G(4x 4GB ) DS - - 9-9-9-28 1.6V • Crucial BL25664BN1608.16FF(XMP) 6GB(3 x 2GB) DS - - - - • Transcend JM1600KLN-8GK 8GB(4GBx2) DS Transcend TK483PCW3 - -
AX3U1600XC4G79-
2X(XMP)
F3-12800CL9D-
2GBNQ(XMP)
F3-12800CL9D-
4GBECO(XMP)
F3-12800CL7D-
4GBRM(XMP)
F3-12800CL8D-
4GBRM(XMP)
F3-12800CL7D-
8GBRH(XMP)
F3-12800CL9D-
8GBRL(XMP)
FLGE85F-B8KJ9A
FEIS(XMP)
KHX1600C7D3K2/
4GX(XMP)
8GB(2 x 4GB) DS - - 7-9-7-21 1.55V-1.75V •
2GB(2 x 1GB) SS - - 9-9-9-24 1.5V
4GB(2 x 2GB) DS - - 9-9-9-24 XMP 1.35V •
4GB(2 x 2GB) DS - - 7-8-7-24 1.6V
4GB(2 x 2GB) DS - - 8-8-8-24 1.60V
8GB(2 x 4GB) DS - - 7-8-7-24 1.6V
8GB(2 x 4GB) DS - - 9-9-9-24 1.5V
2GB DS - - - -
4GB ( 2x 2GB ) DS - - - 1.65V
SS/DSChip
Brand
Chip NO. Timing Voltage
DIMM socket support (Optional)
1 DIMM* 2 DIMMs*
DDR3-1333 MHz capability
1.25V-
1.35V(low voltage)
1.35V(low voltage)
1.35V(low voltage)
DIMM socket support (Optional)
1 DIMM* 2 DIMMs*
Vendors Part No. Size
A-Data AD31333001GOU 1GB SS A-Data
A-Data AD63I1B0823EV 2GB SS A-Data 3CCA-1509A - - • A-Data AD31333G001GOU 3GB(3 x 1GB) SS - - 8-8-8-24 1.65-1.85V •
AXDU1333GC2G9-2G
A-Data
(XMP)
A-Data AD31333G002GMU 2GB DS - - 8-8-8-24 1.65-1.85V • • A-Data AD63I1C1624EV 4GB DS A-Data 3CCA-1509A - - • Apacer 78.A1GC6.9L1 2GB DS Apacer AM5D5808DEWSBG - - • Apacer 78.A1GC6.9L1 2GB DS Apacer AM5D5808FEQSBG 9 - • Apacer 78.B1GDE.9L10C 4GB DS Apacer AM5D5908CEHSBG - - • CORSAIR CM3X1024-1333C9 1GB SS - - 9-9-9-24 1.60V • CORSAIR TR3X3G1333C9 G 3GB(3 x 1GB) SS - - 9-9-9-24 1.50V • CORSAIR TR3X6G1333C9 G 6GB(3x 2GB) SS - - 9-9-9-24 1.50V
CMD24GX3M6A1333C9
CORSAIR
(XMP) CORSAIR TW3X4G1333C9D G 4GB(2 x 2GB) DS - - 9-9-9-24 1.50V • CORSAIR CMD8GX3M4A1333C7 8GB(4 x 2GB) DS - - 7-7-7-20 1.60V • Crucial CT25664BA1339.16FF 2GB DS Micron 9KF27D9KPT 9 -
BL25664BN1337.16FF Crucial
(XMP) Crucial CT25672BA1339.18FF 2GB DS Micron 91F22D9KPT(ECC) 9 -
ELPIDA EBJ10UE8EDF0-DJ-F 1GB SS ELPIDA J1108EDSE-DJ-F -
ELPIDA EBJ21UE8EDF0-DJ-F 2GB DS ELPIDA J1108EDSE-DJ-F -
F3-10600CL8D-2GBHK G.SKILL
(XMP) G.SKILL F3-10600CL9D-2GBNQ 2GB(2 x 1GB) SS - - 9-9-9-24 1.5V
4GB(2 x 2GB) SS - - 9-9-9-24
24GB(6x4GB) DS - - 9-9-9-24 1.60V
6GB(3 x 2GB) DS - - 7-7-7-24 1.65V
1GB SS G.SKILL - - -
SS/
Chip Brand Chip NO. Timing Voltage
DS
AD30908C8D-151C E0906
- -
continued on the next page
1-12
Chapter 1: Product introduction
DDR3-1333 MHz capability
XMP
1.35V
1.3V(low voltage)
1.35V(low voltage)
1.35V(low voltage)
XMP
1.25V
DIMM socket support (Optional)
1 DIMM* 2 DIMMs*
Vendors Part No. Size
F3-10666CL7T-3GBPK
G.SKILL
(XMP) F3-10666CL8D-
G.SKILL
4GBECO(XMP) F3-10666CL7T-6GBPK
G.SKILL
(XMP) F3-10666CL7D-8GBRH
G.SKILL
(XMP)
GEIL GET316GB1333C9QC
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
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 -
Hynix HMT325U6BFR8C-H9 2GB SS Hynix H5TQ2G83BFRH9C - -
Hynix HMT125U6TFR8A-H9 2GB DS Hynix H5TC1G83TFRH9A -
Hynix HMT351U6BFR8C-H9 4GB DS Hynix H5TQ2G83BFRH9C - - • 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 - -
KVR1333D3N9/2G
KINGSTON
(low prole)
KINGSTON KVR1333D3S8N9/2G 2GB SS Micron IID77 D9LGK - 1.5V
KVR1333D3N9/2G
KINGSTON
(low prole)
KINGSTON KVR1333D3N9/2G 2GB DS KTC D1288JPNDPLD9U 9 1.5V • KINGSTON KVR1333D3N9/2G 2GB DS ELPIDA J1108BDSE-DJ-F 9 1.5V
KVR1333D3N9/2G-SP
KINGSTON
(low prole)
KVR1333D3N9/2G-SP
KINGSTON
(low prole)
KHX1333C7D3K2/4GX
KINGSTON
(XMP) KHX1333C9D3UK2/4GX
KINGSTON
(XMP) KVR1333D3N9/4G
KINGSTON
(low prole)
KINGSTON KVR1333D3N9/4G 4GB DS KTC D2568JENCNGD9U - 1.5V • KINGSTON KVR1333D3N9/4G 4GB DS Hynix H5TQ2G83AFR - -
KVR1333D3N9/4G-SP
KINGSTON
(low prole)
Micron MT4JTF12864AZ-1G4D1 1GB SS Micron OJD12D9LGQ - - • Micron MT8JTF25664AZ-1G4D1 2GB SS Micron OJD12D9LGK - - • Micron MT16JTF25664AZ-1G4F1 2GB DS Micron 9KF27D9KPT 9 - • Micron MT16JTF51264AZ-1G4D1 4GB DS Micron OLD22D9LGK - - • Micron MT8JTF25664AZ-1G4M1 2GB SS MICRON IJM22 D9PFJ - - • OCZ OCZ3G1333LV6GK 6GB(3 x 2GB) DS - - 9-9-9-20 1.65V • OCZ OCZ3P1333LV6GK 6GB(3 x 2GB) DS - - 7-7-7-20 1.65V • OCZ OCZ3X1333LV6GK(XMP) 6GB(3 x 2GB) DS - - 8-8-8-20 1.60V • PSC AL7F8G73F-DJ2 1GB SS PSC A3P1GF3FGF - - • PSC AL8F8G73F-DJ2 2GB DS PSC A3P1GF3FGF - - • SAMSUNG M378B2873FHS-CH9 1GB SS SAMSUNG K4B1G0846F - - • 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 W1333X2G8(XMP) 1GB SS - - 8 - • 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 Micron 0YD77D9LGK - - • Transcend JM1333KLN-2G 2GB SS Hynix H5TQ2G83BZRH9C - - • Transcend JM1333KLU-2G 2GB DS Transcend TK243PDF3 - - • NANYA NT4GC64B8HG0NF-CG 4GB DS NANYA NT5CB256M8GN-CG - -
3GB(3 x 1GB) SS - - 7-7-7-18 1.5~1.6V •
4GB(2 x 2GB) DS - - 8-8-8-8-24
6GB(3 x 2GB) DS - - 7-7-7-18 1.5~1.6V •
8GB(2 x 4GB) DS - - 7-7-7-21 1.5V
16GB(4x 4GB )
2GB SS Hynix H5TQ2G83AFRH9C 9 -
2GB DS ELPIDA J1108BFBG-DJ-F 9 1.5V
2GB DS KTC D1288JEMFNGD9U - 1.5V
2GB DS KINGSTON D1288JPSFPGD9U - 1.5V
4GB(2 x 2GB) DS - - 7 1.65V
4GB(2 x 2GB) DS - - 9
4GB DS ELPIDA J2108BCSE-DJ-F 9 1.5V
4GB DS KINGSTON D2568JENCPGD9U - 1.5V
SS/
Chip Brand Chip NO. Timing Voltage
DS
DS - - 9-9-9-24 1.5V
ASUS M5A78L-M LX3 Series
1-13
DDR3-1066 MHz capability
Vendors Part No. Size SS/DS
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
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
KVR1066D3N7/1G(low
prole)
MT16JTF25664AZ­1G1F1
1GB SS ELPIDA J1108BFSE-DJ-F 7 1.5V
2GB DS Micron 9HF22D9KPT 7 -
Chip
Chip NO. Timing Voltage
Brand
AMD® FX™ Series CPU on this motherboard supports up to DDR3 1866MHz as its standard memory frequency.
Due to CPU spec., AMD® AM3 CPUs on this motherboard support up to DDR3
1333MHz.
SS: Single-sided / DS: Double-sided
DIMM support:
1 DIMM*: Supports one module inserted into any slot as single-channel memory
conguration.
2 DIMMs*: Supports one pair of modules inserted into either slot or the blue slots as
one pair of dual-channel memory conguration.
Visit the ASUS website at www.asus.com for the latest QVL.
DIMM socket support (Optional)
1 DIMM* 2 DIMMs*
1-14
Chapter 1: Product introduction

1.5.3 Installing a DIMM

1
2
3
To remove a DIMM
B
A
ASUS M5A78L-M LX3 Series
A
1-15

1.6 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.

1.6.1 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.
1.6.2 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.

1.6.3 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.

1.6.4 PCI Express x1 slot

This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that
comply with the PCI Express specications.

1.6.5 PCI Express x16 slot

This motherboard supports one PCI Express x16 graphics card that comply with the PCI
Express specications.
1-16
Chapter 1: Product introduction

1.7 Jumpers

M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS Clear RTC RAM
1 2 2 3
Normal
(Default)
Clear RTC
CLRTC
1. Clear RTC RAM (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 <Del> key during the boot process and enter BIOS setup to reenter data.
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 so the BIOS can automatically reset parameter settings to default values.
ASUS M5A78L-M LX3 Series
1-17
2. Keyboard power (3-pin KBPWR)
M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS Keyboard power setting
21
2 3
+5V
(Default)
+5VSB
KBPWR
M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS USB device wake-up
21
2 3
+5V
(Default)
+5VSB
USBPW5-8
21
2 3
+5V
+5VSB
(Default)
USBPW1-4
This jumper allows you to enable or disable the keyboard 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 keyboard. 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 (3-pin USBPW1-4, 3-pin USBPW5-8)
Set these jumpers 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).
The USB device wake-up feature requires a power supply that can provide 500mA on
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.
1-18
Chapter 1: Product introduction

1.8 Connectors

9 8
3 4
5
2
67
1
10

1.8.1 Rear panel ports

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.
LAN port LED indications
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
ACT/LINK
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.
LED
LAN port
SPEED
LED
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
output.
Headset
2-channel
4-channel 6-channel 8-channel
Port
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
ASUS M5A78L-M LX3 Series
1-19
6. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are for
M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS 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
NC
MIC2
MICPWR
Line out_R
NC
Line out_L
Legacy AC’97
compliant definition
USB 2.0/1.1 devices.
7. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are for USB
USB 2.0/1.1 devices.
8. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other
VGA-compatible devices.
9. COM port. This port is for pointing devices or other serial devices.
10. PS/2 Keyboard port (purple). This port is for a PS/2 keyboard.

1.8.2 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 High Denition Audio or 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 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 Select item in the BIOS to [HD Audio]. See section 2.4.4 Onboard Devices Conguration for details.
The front panel audio I/O module is purchased separately.
1-20
Chapter 1: Product introduction
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS 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
ATX12V
PIN 1
+12V DC
+12V DC
GND
GND
These connectors are for an ATX power supply. The plugs from the power supply are
designed to t these connectors in only one orientation. Find the proper orientation and push down rmly until the connectors completely t.
We recommend that you use an ATX 12V Specication 2.0-compliant power supply
unit (PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin power plugs.
If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin power plug can provide at least 15 A on +12 V and that the PSU has a minimum power rating of 300W. The system may become unstable or may not boot up if the power is inadequate.
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 or when you intend to install additional 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.
ASUS M5A78L-M LX3 Series
1-21
3. Serial ATA 3.0 Gb/s connectors (7-pin SATA3G_1~4)
S
AT
A3G_
1
G
N
D
R
SATA
_
R
XP
1
R
SATA
_
R
XN
1
G
N
D
R
SATA
_
TX
N
1
R
SATA_T
X
P
1
G
N
D
S
AT
A3G_
2
G
N
D
R
SATA
_
TX
P
2
R
SA
T
A_
TX
N
2
G
N
D
R
SATA_R
XN
2
R
S
A
TA
_R
X
P
2
G
N
D
S
AT
A3G_
3
G
N
D
R
SATA
_
R
XP
3
R
SATA
_
R
XN
3
G
N
D
R
SATA_T
X
N
3
R
SATA_T
X
P
3
G
N
D
S
AT
A3G_
4
G
N
D
R
SATA_T
X
P
4
R
SA
T
A_TXN4
G
N
D
R
SATA
_
R
XN
4
R
S
A
TA
_
R
X
P
4
G
N
D
M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS SATA 3.0Gb/s connectors
These connectors are for the Serial ATA 3.0 Gb/s signal cables for Serial ATA hard disk drives and optical disc drives. If you installed Serial ATA hard disk drives, you can
create a RAID 0, RAID 1, or RAID 10 conguration through the onboard controller.
These connectors are set to IDE mode by default. In IDE mode, you can connect
Serial ATA boot/data hard disk drives to these connectors. If you intend to create a Serial ATA RAID set using these connectors, set the type of the SATA connectors in the BIOS to [RAID]. See section 2.3.4 SATA Conguration for details.
You must install Windows® XP Service Pack 3 or later version before using Serial ATA hard disk drives. The Serial ATA RAID feature is available only if you are using Windows® XP SP3 or later version.
When using hot-plug and NCQ, set the type of the SATA connectors in the BIOS to [AHCI]. See section 2.3.4 SATA Conguration for details.
1-22
Chapter 1: Product introduction
4. System panel connector (10-1 pin F_PANEL)
M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS System panel connector
PIN 1
PWRBTN
PLED+
PLED-
PWR
GND
HD_LED+
HD_LED-
Ground
Reset
F_PANEL
PLED
+HDLED RESET
M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS Speaker out connector
+5V
GND
GND
Speaker Out
SPEAKER
PIN 1
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 HD 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.
5. Speaker connector (4-pin SPEAKER)
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings.
ASUS M5A78L-M LX3 Series
1-23
6. USB 2.0 connectors (10-1 pin USB56, USB78)
M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS USB2.0 connectors
PIN 1
USB+5V
USB_P6-
USB_P6+
GND
NC
USB+5V
USB_P5-
USB_P5+
GND
USB56USB78
PIN 1
USB+5V
USB_P8-
USB_P8+
GND
NC
USB+5V
USB_P7-
USB_P7+
GND
CHA_FAN
CPU_FAN
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND
M5A78L-M LX3 PLUS
M5A78L-M LX3 PLUS fan connectors
GND +12V Rotation
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
480Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!
The USB 2.0 module is purchased separately.
7. CPU and chassis fan connectors (4-pin CPU_FAN and 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.
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.
Only the 4-pin CPU fan connector supports the ASUS Fan Xpert feature.
1-24
Chapter 1: Product introduction

1.9 Software support

1.9.1 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.

1.9.2 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.
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 into the optical drive. If Autorun is enabled in your computer, the DVD automatically displays the Specials screen. Click Drivers, Utilities, Make Disk, Manual, and Contact tabs to display their respective menus.
The following screen is for reference only.
Click an item to install
If Autorun is NOT enabled on 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.
ASUS M5A78L-M LX3 Series
Click an icon to display Support DVD/motherboard information
1-25
1-26
Chapter 1: Product introduction
BIOS information
2

2.1 Managing and updating your BIOS

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.

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.
• 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.
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.
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:
ASUS M5A78L-M LX3 2-1
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.
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.

2.1.2 ASUS EZ Flash 2 utility

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, then launch
EZ Flash 2 in either of these two ways:
Press <Alt> + <F2> during POST.
Enter the BIOS setup program. Go to the Tools menu to select EZ Flash 2 and press <Enter> to enable it.
Press <Tab> to switch between drives until the correct BIOS le is found.
2. When the correct BIOS le is found, EZ Flash 2 performs the BIOS update process
and automatically reboots the system when done.
• 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!
2-2 Chapter 2: BIOS information

2.1.3 ASUS CrashFree BIOS 3

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 USB ash drive into
MA78LLX3.ROM (for M5A78L-M LX3) or MA78LL3P.ROM (for M5A78L-M LX3 PLUS).
• 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 starts ashing the corrupted BIOS le.
4. Turn off the system after the utility completes the updating process and turn on again.
DO NOT shut down or reset the system while updating the BIOS! Doing so can cause system boot failure!
Ensure to load the BIOS default settings to ensure system compatibility and stability. Select the Load Setup Defaults item under the Exit menu. Refer to section 2.8 Exit menu for details.
ASUS M5A78L-M LX3 2-3

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>+<Delete> 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.
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 that you always shut down the system properly from the operating system.
• The default BIOS settings for this motherboard apply to most conditions to ensure optimum performance. If the system becomes unstable after changing any BIOS settings, load the default settings to ensure system compatibility and stability. Select the Load Setup Defaults item under the Exit menu. See section 2.8 Exit Menu.
• The BIOS setup screens in this chapter are for reference only. They 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.
2-4 Chapter 2: BIOS information

2.2.1 BIOS menu screen

Menu items
Main Advanced Power Boot Tools Exit
Main Settings
System Time [19:34:30]
System Date [Thu 12/29/2011]
SATA3G_1 :[Not Detected] SATA3G_2 :[Not Detected] SATA3G_3 :[Not Detected] SATA3G_4 :[Not Detected]
SATA Conguration
System Information
Submenu items
Menu bar
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.
Conguration elds
M5A78L-M LX3 BIOS Setup
General help
Use [ENTER], [TAB] or [SHIFT-TAB] to
select a eld.
Use [+] or [-] to
congure system
Time.
Select Screen
Select Item
+- Change Field
Tab Select Field F1 General Help F10 Save and Exit ESC Exit
Navigation keys
Version 0305

2.2.2 Menu bar

The menu bar on top of the screen has the following main items:
Main For changing the basic system conguration
Advanced For changing the advanced system settings
Power For changing the advanced power management (APM) conguration
Boot For changing the system boot conguration
Tools For conguring options for special functions
Exit For selecting the exit options and loading default settings.
To select an item on the menu bar, press the right or left arrow key on the keyboard until the desired item is highlighted.

2.2.3 Navigation keys

At the bottom right corner of a menu screen are the navigation keys for that particular menu. Use the navigation keys to select items in the menu and change the settings.
Some of the navigation keys differ from one screen to another.
ASUS M5A78L-M LX3 2-5

2.2.4 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 (Advanced, Power, Boot, Tools, and Exit) on the menu bar have their
respective menu items.

2.2.5 Submenu items

A solid triangle before each item on a menu screen means that the item has a submenu. To display the submenu, select the item and press <Enter>.
2.2.6 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 enclosed in brackets, and is highlighted when selected. To change the value of a eld, select it then press <Enter> to display a list of options. Refer to 2.2.7 Pop-up
window.

2.2.7 Pop-up window

Select a menu item then press <Enter> to display a pop-up
window with the conguration
options for that item.

2.2.8 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
Main Advanced Power Boot Tools Exit
Power Settings
Suspend Mode [Auto]
ACPI 2.0 Support [Enabled] ACPI APIC support [Enabled]
APM Conguration
Hardware Monitor
Anti Surge Support [Enabled]
v02.61 (C)Copyright 1985-2011, American, American Megatrends, Inc.
M5A78L-M LX3 BIOS Setup
Options S1 (POS) only S3 only
Auto
Pop-up window
Select the ACPI state used for System Suspend.
Scroll bar
Select Screen
Select Item +- Change Field F1 General Help F10 Save and Exit ESC Exit
keys or <Page Up> /<Page Down> keys to display the other items on the screen.

2.2.9 General help

At the top right corner of the menu screen is a brief description of the selected item.
Version 0302
2-6 Chapter 2: BIOS information

2.3 Main menu

When you enter the BIOS Setup program, the Main menu screen appears, giving you an overview of the basic system information.
Refer to section 2.2.1 BIOS menu screen for information on the menu screen items and how to navigate through them.
Main Advanced Power Boot Tools Exit
Main Settings
System Time [19:34:30]
System Date [Thu 08/14/2011]
SATA3G_1 :[Not Detected] SATA3G_2 :[Not Detected] SATA3G_3 :[Not Detected] SATA3G_4 :[Not Detected]
SATA Conguration
System Information
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.
M5A78L-M LX3 BIOS Setup
Use [ENTER], [TAB] or [SHIFT-TAB] to
select a eld.
Use [+] or [-] to
congure system
Time.
+- Change Field
Tab Select Field F1 General Help F10 Save and Exit ESC Exit
Version 0302
Select Screen
Select Item

2.3.1 System Time [xx:xx:xx]

Allows you to set the system time.

2.3.2 System Date [Day xx/xx/xxxx]

Allows you to set the system date.

2.3.3 SATA3G_1~4SATA3G_1~4

While entering Setup, the BIOS automatically detects the presence of SATA devices. There is a separate submenu for each SATA device. Select a device item then press <Enter> to display the SATA device information.
The BIOS automatically detects the values opposite the dimmed items (Device, LBA/Large Mode, Block (Multi-Sector Transfer) Mode, PIO Mode, DMA Mode, SMART monitoring
and 32Bit Data Transfer). These values are not user-congurable. These items show Not
Detected if no SATA device is installed in the system.
LBA/Large Mode [Auto]
Enables or disables the LBA mode. Setting this item to [Auto] enables the LBA mode if the device supports this mode, and if the device was not previously formatted with LBA mode
disabled. Conguration options: [Disabled] [Auto]
Block (Multi-Sector Transfer) M [Auto]
Enables or disables data multi-sectors transfers. When this item is set to [Auto], the data transfer from and to the device occurs multiple sectors at a time if the device supports multi­sector transfer feature. When this item is set to [Disabled], the data transfer from and to the
device occurs one sector at a time. Conguration options: [Disabled] [Auto]
ASUS M5A78L-M LX3 2-7
PIO Mode [Auto]
Selects the PIO mode. Conguration options: [Auto] [0] [1] [2] [3] [4]
DMA Mode [Auto]
Selects the DMA mode. Conguration options: [Auto]
SMART Monitoring [Auto]
Sets the Smart Monitoring, Analysis, and Reporting Technology. Conguration options: [Auto]
[Disabled] [Enabled]
32Bit Data Transfer [Enabled]
Enables or disables 32-bit data transfer. Conguration options: [Disabled] [Enabled]
2.3.4 SATA Conguration
The SATA Conguration menu allows you to congure your storage devices. Select an item then press <Enter> to display the submenu.
OnChip SATA Channel [Enabled]
Enables or disables the onboard channel SATA port. Conguration options: [Disabled]
[Enabled]
The following item only appears when you set OnChip SATA Channel to [Enabled].
SATA Port1 - Port4 [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
[RAID] Set to [RAID] when you want to create a RAID conguration from the SATA
[AHCI] Set to [AHCI] when you want the SATA hard disk drives to use the AHCI
Parallel ATA physical storage devices.
hard disk drives.
(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.

2.3.5 System Information

This menu gives you an overview of the general system specications. The BIOS
automatically detects the items in this menu.
BIOS Information
Displays the auto-detected BIOS information.
Processor
Displays the auto-detected CPU specication.
System Memory
Displays the auto-detected system memory.
2-8 Chapter 2: BIOS information

2.4 Advanced menu

The Advanced menu items allow you to change the settings for the CPU and other system devices.
Take caution when changing the settings of the Advanced menu items. Incorrect eld
values can cause the system to malfunction.
Main Advanced Power Boot Tools Exit
Advanced Settings
JumperFree Conguration
CPU Conguration
Chipset
Onboard Devices Conguration
PCIPnP
USB Conguration
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.
M5A78L-M LX3 BIOS Setup
Adjust System Frequency/Voltage etc.
+- Change Field Tab Select Field F1 General Help F10 Save and Exit ESC Exit
Version 0302
Select Screen
Select Item
2.4.1 JumperFree Conguration
The items and conguration options in this menu may vary depending on the AMD CPU
type.
CPU OverClocking [Overclock Prole]
Selects the CPU overclocking options to achieve desired CPU internal frequency.
Conguration options: [Manual] [Auto] [Overclock Prole] [Test Mode]
The following item appears only when you set CPU Overclocking to [Manual].
CPU/HT Reference Clock (MHz) [200]
Sets the CPU/HT Reference Clock. Conguration options: [Min.=200] [Max.=550]
The following item appears only when you set CPU Overclocking to [Overclock Prole].
Overclock Options [Overclock 5%]
Selects the overclocking prole. Conguration options: [Auto] [Overclock 2%]
[Overclock 5%] [Overclock 8%] [Overclock 10%]
GPU Overclocking [Auto]
Congures the GPU overclocking. Conguration options: [Auto] [Manual]
The following item appears only when you set GPU Overclocking to [Manual].
GPU Engine Clock [350]
Sets the GPU Engine Clock. Use <+> / <-> keys to adjust the ratio or input a number between 200 and 350.
ASUS M5A78L-M LX3 2-9
PCIE Overclocking [Auto]
Congures the PCIE overclocking. Conguration options: [Auto] [Manual]
The following item only appears when you set PCIE Overclocking to [Manual].
PCIE Clock [100]
Sets the PCIE Clock. Use <+> / <-> keys to adjust the ratio or input a number between 100 and 150.
CPU Ratio [Auto]
Sets the CPU ratio. Conguration options:[Auto] [x4.0 800MHz] [x4.5 900MHz] [x5.0 1000MHz] [x5.5 1100MHz] [x6.0 1200MHz] [x6.5 1300MHz] [x7 1400MHz] [x7.5 1500MHz] [x8.0 1600MHz] [x8.5 1700MHz] [x9 1800MHz] [x9.5 1900MHz] [x10.0 2000MHz] [x10.5 2100MHz] [x11 2200MHz]
CPU/NB Frequency [Auto]
Sets the CPU/Northbridge frequency. Conguration options: [Auto] [840MHz] [1050MHz] [1260MHz] [1470MHz] [1680MHz] [1890MHz] [2100MHz]]
CPU Over Voltage [Auto]
Sets the CPU over voltage. The valid value ranges vary depending on your CPU model. Use
<+> / <-> keys to adjust the ratio. Conguration options: [Auto]
VDDNB Over Voltage [Auto]
Sets the VDDNB over voltage. The valid value ranges vary depending on your CPU model.
Use <+> / <-> keys to adjust the ratio. Conguration options: [Auto]
LoadLine Calibration [Auto]
Sets the LoadLine. Conguration options: [Auto] [0%] [3.225%] [6.450%] [9.675%] [12.90%] ~
[87.075%] [90.3%] [93.525%] [96.75%] [100%]
If the system becomes unstable after changing the setting, set it back to [Auto] for safe mode.
HT Link Speed [Auto]
Sets the HyperTransport link speed. Conguration options: [Auto] [210MHz] [420MHz] [630MHz] [840MHZ] [1050MHz] [1260MHz] [1470MHz] [1680MHz] [1890MHz] [2100MHz]
DRAM Timing Cong [Auto]
Conguration options: [Auto] [Manual]
The following items only appear when you set DRAM Timing Cong to [Manual].
Memory Clock Speed [400MHz]
Selects the memory clock frequency programming method. Conguration options: [400MHz] [533MHz] [667MHz] [800MHz]
2-10 Chapter 2: BIOS information
DRAM Timing Conguration
The conguration options for some of the following items vary depending on the DIMMs you
install on the motherboard.
DRAM CAS# Latency [Auto]
Conguration options: [Auto] [4 CLK] ~ [12 CLK]
DRAM RAS# to CAS# Delay [Auto]
Conguration options: [Auto] [5 CLK] ~ [12 CLK]
DRAM RAS# PRE Time [Auto]
Conguration options: [Auto] [5 CLK] ~ [12 CLK]
DRAM RAS# ACT Time [Auto]
Conguration options: [Auto] [15 CLK] ~ [30 CLK]
DRAM READ to PRE Time [Auto]
Conguration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]
DRAM Row Cycle Time [Auto]
Conguration options: [Auto] [12 CLK] ~ [42 CLK]
DRAM WRITE Recovery Time [Auto]
Conguration options: [Auto] [5 CLK] [6 CLK] [7 CLK] [8 CLK] [10 CLK] [12 CLK]
DRAM RAS# to RAS# Delay [Auto]
Conguration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]
DRAM READ to WRITE Delay [Auto]
Conguration options: [Auto] [3 CLK] ~ [17 CLK]
DRAM WRITE to READ Delay(DD) [Auto]
Conguration options: [Auto] [2 CLK] ~ [10 CLK]
DRAM WRITE to READ Delay(SD) [Auto]
Conguration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]
DRAM WRITE to WRITE Timing [Auto]
Conguration options: [Auto] [2 CLK] ~ [10 CLK]
DRAM READ to READ Timing [Auto]
Conguration options: [Auto] [3 CLK] ~ [10 CLK]
DRAM REF Cycle Time [Auto]
Conguration options: [Auto] [90ns] [110ns] [160ns] [300ns] [350ns]
DRAM Refresh Rate [Auto]
Conguration options: [Auto] [Every 7.8ms] [Every 3.9ms]
DRAM Command Rate [Auto]
Conguration options: [Auto] [1T] [2T]
Memory Voltage [Auto]
Sets the memory voltage. Conguration options: [Auto] [1.350V] [1.500V] [1.650V] [1.800V]
PCI/PCIe CLK Status [Enabled]
Enables or disables clock for PCI/PCIe slot. Conguration options: [Disabled] [Enabled]
ASUS M5A78L-M LX3 2-11
2.4.2 CPU Conguration
The items in this menu show the CPU-related information that the BIOS automatically detects.
GART Error Reporting [Disabled]
This option should remain disabled for the normal operation. The driver developer may
enable it for testing purpose. Conguration options: [Disabled] [Enabled]
Microcode Updation [Enabled]
Enables or disables Microcode Updation. Conguration options: [Disabled] [Enabled]
Secure Virtual Machine Mode [Disabled]
Enables or disables Secure Virtual Machine Mode (SVM). Conguration options: [Disabled]
[Enabled]
Cool ‘n’ Quiet [Enabled]
Enables or disables the AMD® Cool ‘n’ Quiet technology. Conguration options: [Enabled] [Disabled]
C1E Support [Disabled]
Enables or disables the CPU Enhanced Halt (C1E) function, a CPU power-saving function in system halt state. When this item is enabled, the CPU core frequency and voltage will be reduced during the system halt state to decrease power consumption.
Conguration options: [Disabled] [Enabled]
Advanced Clock Calibration [Disabled]
Adjusts the processor’s overclocking capability. When this item is set to [Auto], the BIOS automatically adjusts this function. When this item is set to [All Cores], the processor has the best overclocking performance. When this item is set to [Per Core], the processor’s overclocking capability is enhanced. Conguration options: [Disabled] [Auto] [All Cores] [Per Core]
The following items appear only when you set Advanced Clock Calibration to [Auto], [All Cores], or [Per Core].
Unleashing Mode [Disabled]
Enable the Unleashing Mode to get full computing power of the processor. However, this might make your system unstable depending on your processor’s overclocking
capability. Conguration options: [Enabled] [Disabled]
Active CPU Cores [Auto]
Allows you to manually turn ON/OFF a process core. Conguration options: [Auto]
[Manual]
2nd / 3rd / 4th Core [On]
These items appear only when you set Active CPU Cores to [Manual].
Conguration options: [On] [Off]
Value (All Cores) [-2%]
This item appears only when you set Advanced Clock Calibration to [All Cores]. It allows you to set the overclocking percentage for all the processor cores as a whole.
Conguration options: [0%] [+2%] [+4%] [+6%] [+8%] [+10%] [+12%] [-2%] [-4%]
[-6%] [-8%] [-10%] [-12%]
2-12 Chapter 2: BIOS information
Value (Core 0) / (Core 1) / (Core 2) / (Core 3) [-2%]
These items only appear when you set Advanced Clock Calibration to [Per Core] and allow you to set the overclocking percentage for each process core separately.
Conguration options: [0%] [+2%] [+4%] [+6%] [+8%] [+10%] [+12%] [-2%] [-4%]
[-6%] [-8%] [-10%] [-12%]

2.4.3 Chipset

NorthBridge Conguration
DRAM Controller Conguration
Bank Interleaving [Auto]
Allows you to enable the bank memory interleaving. Conguration options: [Disabled]
[Auto]
Node Interleaving [Disabled]
Allows you to enable the node memory interleaving. Conguration options: [Disabled]
[Auto]
Channel Interleaving [Auto]
Allows you to enable the channel memory interleaving. Conguration options:
[Disabled] [Auto]
Memory Hole Remapping [Enabled]
Allows you to enable or disable memory remapping around memory hole. Conguration
options: [Disabled] [Enabled]
DCT Unganged Mode [Always]
Allows you to select unganged DRAM mode (64-bit width). Conguration options:
[Always] [Auto]
Power Down Enable [Enabled]
Allows you to enable or disable DDR power down mode. Conguration options:
[Disabled] [Enabled]
ECC Conguration
ECC Mode [Disabled]
Enables or disables the DRAM ECC that allows the hardware to report and correct
memory errors automatically. Conguration options: [Disabled] [Basic] [Good] [Super]
[Max] [User]
Internal Graphics
Primary Video Controller [GFX0-GPP-IGFX-PCI]
Selects the primary display adapter. Conguration options: [GFX0-GPP-IGFX-PCI] [GPP-
GFX0-IGFX-PCI] [PCI-GFX0-GPP-IGFX] [IGFX-GFX0-GPP-PCI]
GFX0: primary video controller on a PCIe x16 slot GPP: primary video controller on a PCIe x1 slot IGFX: onboard display output port PCI: primary video controller on a PCI slot
ASUS M5A78L-M LX3 2-13
UMA Frame Buffer Size [Auto]
Selects the UMA frame buffer size. Conguration options: [Auto] [32MB] [64MB]
[128MB] [256MB] [512MB] [1GB]
• The [512MB] option only appears when you install 1GB system memory or more.
• The [1GB] option only appears when you install 2GB system memory or more.
Surround View [Auto]
Disables or enables the Surround View function. Conguration options: [Auto] [Disabled]
[Enabled]
This item becomes user-congurable when you install an ATI graphics card into the PCIe x16 slot.
Frame Buffer Location [Above 4G]
Conguration options: [Below 4G] [Above 4G]
2.4.4 Onboard Devices Conguration
Serial Port1 Address [3F8/IRQ4]
Allows you to select the Serial Port1 base address. Conguration options: [Disabled] [3F8/IRQ4][2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]
HDAudio Controller [Enabled]
Enables or disables the high denition audio controller. Conguration options: [Disabled]
[Enabled]
Front Panel Select [HD Audio]
This item appears only when you set the previous item to [Enabled]. Conguration
options: [AC97] [HD Audio]
OnBoard LAN Controller [Enabled]
Conguration options: [Disabled] [Enabled]
OnBoard LAN Boot ROM [Disabled]
This item appears only when you set the previous item to [Enabled]. Conguration
options: [Disabled] [Enabled]

2.4.5 PCIPnP

The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices. The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA
devices, and setting the memory size block for legacy ISA devices.
Take caution when changing the settings of the PCI PnP menu items. Incorrect eld values
can cause the system to malfunction.
Plug and Play O/S [No]
When this item is set to [No], BIOS congures all the devices in the system. When this item is set to [Yes] and if you install a Plug and Play operating system, the operating system
congures the Plug and Play devices not required for boot. Conguration options: [No] [Yes]
2-14 Chapter 2: BIOS information
2.4.6 USB Conguration
The items in this menu allows you to change the USB-related features. Select an item then press <Enter> to display the conguration options.
The Module Version and USB Devices Enabled items show the auto-detected values. If no USB device is detected, the item shows None.
USB Functions [Enabled]
Allows you to enable or disable the USB functions. Conguration options: [Disabled]
[Enabled]
The following items appear only when you set USB Functions to [Enabled].
USB 2.0 Controller [Enabled]
Enables or disables USB 2.0 Controllers. Conguration options: [Disabled] [Enabled]
Legacy USB Support [Auto]
Allows you to enable or disable support for Legacy USB storage devices, including USB ash
drives and USB hard drives. Setting to 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. Conguration options: [Disabled] [Enabled]
[Auto]
USB 2.0 Controller Mode [HiSpeed]
Allows you to congure the USB 2.0 controller in HiSpeed (480Mbps) or Full Speed (12Mbps). Conguration options: [FullSpeed] [HiSpeed]
The following items only appear when a USB storage device is plugged in.
USB Mass Storage Device Conguration
USB Mass Storage Reset Delay [20 Sec]
Sets the maximum time that the BIOS waits for the USB storage device to initialize. Conguration options: [10 Sec] [20 Sec] [30 Sec] [40 Sec]
Emulation Type [Auto]
Allows you to set the emulation type. Conguration options: [Auto] [Floppy] [Forced FDD] [Hard Disk] [CDROM]
ASUS M5A78L-M LX3 2-15

2.5 Power menu

The Power menu items allow you to change the settings for the Advanced Conguration and
Power Interface (ACPI) and the Advanced Power Management (APM). Select an item then press <Enter> to display the conguration options.
Main Advanced Power Boot Tools Exit
Power Settings
Suspend Mode [Auto]
ACPI 2.0 Support [Enabled] ACPI APIC Support [Enabled]
APM Conguration HW Monitor Conguration
Anti Surge Support [Enabled]
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.
M5A78L-M LX3 BIOS Setup
Select the ACPI state used for System Suspend.
+- Change Option F1 General Help F10 Save and Exit ESC Exit

2.5.1 Suspend Mode [Auto]

Allows you to select the Advanced Conguration and Power Interface (ACPI) state to be used for system suspend. Conguration options: [S1 (POS) Only] [S3 Only] [Auto]

2.5.2 ACPI 2.0 Support [Enabled]

Allows you to enable or disable the Advanced Conguration and Power Interface (ACPI) 2.0 support. Conguration options: [Disabled] [Enabled]

2.5.3 ACPI APIC Support [Enabled]

Allows you to enable or disable the Advanced Conguration and Power Interface (ACPI)
support in the Advanced Programmable Interrupt Controller (APIC). When set to Enabled, the
ACPI APIC table pointer is included in the RSDT pointer list. Conguration options: [Disabled]
[Enabled]
Version 0302
Select Screen
Select Item
2.5.4 APM Conguration
Restore on AC Power Loss [Power Off]
When this item is set to [Power Off], the system goes into off state after an AC power loss. When this item is set to [Power On], the system goes on after an AC power loss. When thisWhen this item set to [Last State], the system goes into either off or on state, whatever the system
state was before the AC power loss. Conguration options: [Power Off] [Power On] [LastAC power loss. Conguration options: [Power Off] [Power On] [Last
State]
Power on From S5 By PME# [Disabled]
Enables or disables PME wake from sleep states. Conguration options: [Disabled] [Enabled]
Power on From S5 By Ring [Disabled]
Enables or disables ring to generate a wake event. Conguration options: [Disabled]
[Enabled]
2-16 Chapter 2: BIOS information
Power on By PS/2 Keyboard [Disabled]
Enables or disables PS/2 Keyboard to generate a wake event. Conguration options:
[Disabled] [Space Bar] [Power Key] [Ctrl-Esc]
Power on From S5 By RTC Alarm [Disabled]
Enables or disables RTC to generate a wake event. Conguration options: [Disabled]
[Enabled]
2.5.5 HW Monitor Conguration
CPU Temperature [xxxºC/xxxºF] or [Ignored] MB Temperature [xxxºC/xxxºF] or [Ignored]
The onboard hardware monitor automatically detects and displays the motherboard and CPU temperatures. Select Ignored if you do not wish to display the detected temperatures.
CPU / Chassis Fan Speed [N/A], [xxxxRPM], or [Ignored]
The onboard hardware monitor automatically detects and displays the CPU / Chassis fan
speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the eld
shows N/A. Select [gnored] if you do not want the detected speed to be displayed.
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage [xx.xxxV] or [Ignored]
The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators.
CPU Q-Fan Function [Enabled]
Enables or disables the ASUS Q-Fan feature that smartly adjusts the CPU fan speeds for
more efcient system operation. Conguration options: [Disabled] [Enabled]
The following items appear only when you set CPU Q-Fan Function to [Enabled].
CPU Fan Speed Low Limit [200 RPM]
Allows you to manually set a lower limit for the CPU fan speed. If the CPU fan speed is
below the specied limit, the system sends out warning beeps. Conguration options:
[600 RPM] [500 RPM] [400 RPM] [300 RPM] [200 RPM] [Ignored]
CPU Q-Fan Mode [Standard]
Allows you to set the appropriate performance level of the CPU fan. [Standard] Sets to [Standard] to make the CPU fan automatically adjust depending
[Silent] Sets to [Silent] to minimize the fan speed for quiet CPU fan operation.
[Turbo] Set to [Turbo] to achieve maximum CPU fan speed. [Manual] Allows you to individually set the CPU fan parameters.
CPU Upper Temperature [70oC/158oF]
Allows you to select the CPU upper temperature. Conguration options: [30[30oC/86oF] [40oC/104oF] [50[50oC/122oF] [60[60oC/140oF] [70 [70[70oC/158oF] [80oC/176oF] [90oC/194oF]
ASUS M5A78L-M LX3 2-17
on the CPU temperature.
The following four items appear only when you set CPU Q-Fan Mode to [Manual].
CPU Fan Max. Duty Cycle(%) [100%]
Allows you to select the maximum CPU fan duty cycle. When the CPU temperature reaches the upper limit, the CPU fan will operate at the maximum duty cycle. Congu­ration options: [20%] [30%] [40%] [50%] [60%] [70%] [80%] [90%] [100%].
CPU Lower Temperature [20oC/68oF]
Displays the lower limit of the CPU temperature.
CPU Fan Min. Duty Cycle(%) [20%]
Allows you to select the minimum CPU fan duty cycle. When the CPU temperature is
under 40ºC, the CPU fan will operate at the minimum duty cycle. Conguration options:
[00%] [10%] [20%] [30%] [40%] [50%] [60%] [70%] [80%] [90%] [100%].

2.5.6 Anti Surge Support [Enabled]

Allows you to enable or disable the Anti-Surge protection feature. Conguration options:
[Disabled] [Enabled]
2-18 Chapter 2: BIOS information

2.6 Boot menu

The Boot menu items allow you to change the system boot options. Select an item then press <Enter> to display the submenu.
Main Advanced Power Boot Tools Exit
Boot Settings
Boot Device Priority
Boot Settings Conguration
Security
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.
M5A78L-M LX3 BIOS Setup
Species the Boot
Device Priority sequence.
A virtual oppy disk
drive (Floppy Drive B:) may appear when you set the CD-ROM drive as the
rst boot device.

2.6.1 Boot Device Priority

1st ~ xxth Boot Device
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. Conguration options: [Removable Dev.] [Hard Drive] [ATAPI CD-ROM] [Disabled]
• 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.
Version 0302
Select Screen
Select Item Enter Go to Sub Screen F1 General Help F10 Save and Exit ESC Exit
2.6.2 Boot Settings Conguration
Quick Boot [Enabled]
Enabling this item allows the BIOS to skip some power on self tests (POST) while booting to decrease the time needed to boot the system. When this item is set to [Disabled], BIOS
performs all the POST items. Conguration options: [Disabled] [Enabled]
Full Screen Logo [Enabled]
Enables or disables the full screen logo display feature. Conguration options: [Disabled]
[Enabled]
Set this item to [Enabled] to use the ASUS MyLogo2™ feature.
ASUS M5A78L-M LX3 2-19
AddOn ROM Display Mode [Force BIOS]
Sets the display mode for option ROM. Conguration options: [Force BIOS] [Keep Current]
Bootup Num-Lock [On]
Selects the power-on state for the NumLock. Conguration options: [Off] [On]
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]
Hit ‘DEL’ Message Display [Enabled]
When this item is set to [Enabled], the system displays the message Press DEL to run Setup during POST. Conguration options: [Disabled] [Enabled]

2.6.3 Security

The Security menu items allow you to change the system security settings. Select an item then press <Enter> to display the conguration options.
Change Supervisor Password
Select this item to set or change the supervisor password. The Supervisor Password item on top of the screen shows the default Not Installed. After you set a password, this item shows Installed.
To set a Supervisor Password:
1. Select the Change Supervisor Password item and press <Enter>.
2. On the password box, key in a password containing up to six letters, or numbers, orOn the password box, key in a password containing up to six letters, or numbers, or
both, then press <Enter>.
3. Conrm the password when prompted.
The message Password Installed appears after you successfully set your password.
To change the supervisor password, follow the same steps as in setting a supervisor password.
To clear the supervisor password, select the Change Supervisor Password then press <Enter> twice. The message Password uninstalled appears.
If you forget your BIOS password, you can clear it by erasing the CMOS Real Time Clock (RTC) RAM. See section 1.7 Jumpers for information on how to erase the RTC RAM.
2-20 Chapter 2: BIOS information
After you have set a supervisor password, the other items appear to allow you to change other security settings.
User Access Level [Full Access]
This item allows you to select the access restriction to the Setup items. Conguration options:
[No Access] [View Only] [Limited] [Full Access]
No Access prevents user access to the Setup utility. View Only allows access but does not allow change to any eld. Limited allows changes only to selected elds, such as Date and Time. Full Access allows viewing and changing all the elds in the Setup utility.
Change User Password
Select this item to set or change the user password. 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 Change User Password item and press <Enter>.
2. On the password box, key in a password containing up to six letters, or numbers, orOn the password box, key in a password containing up to six letters, or numbers, or
both, then press <Enter>.
3. Conrm the password when prompted.
The message “Password Installed” appears after you set your password successfully.
To change the user password, follow the same steps as in setting a user password.
Clear User Password
Select this item to clear the user password.
Password Check [Setup]
When set to [Setup], BIOS checks for user password when accessing the Setup utility. When set to [Always], BIOS checks for user password both when accessing Setup and booting the
system. Conguration options: [Setup] [Always]
ASUS M5A78L-M LX3 2-21

2.7 Tools menu

The Tools menu items allow you to congure options for special functions. Select an item then press <Enter> to display the sub-menu.
Main Advanced Power Boot Tools Exit
Tools Settings
ASUS EZ Flash 2
ASUS O.C. Prole
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.
M5A78L-M LX3 BIOS Setup
Press ENTER to run the utility to select and update BIOS. This utility supports:
1.FAT 12/16/32 (r/w)
2.NTFS (read only)
3.CD-DISC (read only)

2.7.1 ASUS EZ Flash 2

Allows you to run ASUS EZ Flash 2. When you press <Enter>, a conrmation message appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to
conrm your choice. See section 2.1.2 for details.
2.7.2 ASUS O.C. Prole
This item allows you to store or load multiple BIOS settings.
Add Your CMOS Prole
Allows you to save the current BIOS le to the BIOS Flash. In the Name sub-item, key in your prole name and press <Enter>, and then choose a prole number to save your CMOS
settings in the Save to sub-item.
Load CMOS Proles.
Allows you to load the previous BIOS settings saved in the BIOS Flash. Press <Enter> to
load the le.
Start O.C. Prole
Allows you to run the utility to save and load CMOS. Press <Enter> to run the utility.
Version 0302
Select Screen
Select Item Enter Go to Sub Screen F1 General Help F10 Save and Exit ESC Exit
• This function can support devices such as a USB ash disk with FAT 32/16 format and
single partition only.
• 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.
• Only the CMO le can be loaded.
2-22 Chapter 2: BIOS information

2.8 Exit menu

The Exit menu items allow you to load the optimal or failsafe default values for the BIOS items, and save or discard your changes to the BIOS items.
Main Advanced Power Boot Tools Exit
Exit Options
Exit & Save Changes
Exit & Discard Changes Discard Changes
Load Setup Defaults
Pressing <Esc> does not immediately exit this menu. Select one of the options from this menu or <F10> from the legend bar to exit.
M5A78L-M LX3 BIOS Setup
Exit system setup after saving the cahnges.
F10 key can be used
for this operation.
Exit & Save Changes
Once you are nished making your selections, choose this option from the Exit menu to
ensure the values you selected are saved to the CMOS RAM. An onboard backup battery sustains the CMOS RAM so it stays on even when the PC is turned off. When you select this
option, a conrmation window appears. Select OK to save changes and exit.
Exit & Discard Changes
Select this option only if you do not want to save the changes that you made to the Setup
program. If you made changes to elds other than System Date, System Time, and Password, the BIOS asks for a conrmation before exiting.
Discard Changes
This option allows you to discard the selections you made and restore the previously saved values. After selecting this option, a conrmation appears. Select OK to discard any changes and load the previously saved values.
Load Setup 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 OK to load default values. Select Exit & Save Changes or make other changes before saving the values to the non-volatile RAM.
Version 0302
ASUS M5A78L-M LX3 2-23
2-24 Chapter 2: BIOS information

Appendices

Notices

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.
M5A78L-M LX3 Series
A-1
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.
VCCI: Japan Compliance Statement
VCCI Class B Statement
KC: Korea Warning Statement
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.
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.
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 detailed recycling information in different regions.
A-2
Appendices

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.
M5A78L-M LX3 Series
A-3
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 : M5A78L-M LX3
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 : Jan. 12, 2012
Ver. 110101
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 : M5A78L-M LX3
conform with the essential requirements of the following directives:
2004/108/EC-EMC Directive
EN 55022:2006+A1:2007
EN 61000-3-2:2006
EN 55013:2001+A1:2003+A2:2006
EN 55024:1998+A1:2001+A2:2003
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 50360:2001
EN 50371:2002
EN 62311:2008
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: Jan. 12, 2012
Year to begin affixing CE marking:2012
Position : CEO
Name : Jerry Shen
Signature :
__________
EC conformit
y
markin
g)
A-4
Appendices
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 : M5A78L-M LX3 PLUS
Conforms to the following specifications:
FCC Part 15, Subpart B, Unintentional 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 : Jun. 29, 2012
Ver. 120601
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 : M5A78L-M LX3 PLUS
conform with the essential requirements of the following directives:
2004/108/EC-EMC Directive
EN 55022:2010
EN 61000-3-2:2006
EN 55013:2001+A1:2003+A2:2006
EN 55024:2010
EN 61000-3-3:2008
EN 55020:2007+A11:2011
1999/5/EC-R &TTE Directive
EN 300 328 V1.7.1(2006-10)
EN 300 440-1 V1.6.1(2010-08)
EN 300 440-2 V1.4.1(2010-08)
EN 301 511 V9.0.2(2003-03)
EN 301 908-1 V4.2.1(2010-03)
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 V1.9.2(2011-09)
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 V1.5.1(2010-09)
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. 120601
CE marking
Declaration Date: Jun. 29, 2012
Year to begin affixing CE marking:2012
Position : CEO
Name : Jerry Shen
Signature : __________
EC conformit
y
markin
g)
M5A78L-M LX3 Series
A-5
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