ASUS M5A78L-M LX PLUS, E8026 User Manual

M5A78L-M LX Series
• M5A78L-M LX V2
• M5A78L-M LX PLUS
Motherboard
E8026 First Edition (V2) January 2013
Copyright © 2012 ASUSTeK COMPUTER INC. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), 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 ........................................................................................ vii
M5A78L-M LX Series specications summary ........................................ ix
Chapter 1 Product introduction
1.1 Welcome! ...................................................................................... 1-1
1.2 Package contents .........................................................................
1.3 Special features ............................................................................
1.3.1 Product highlights ...........................................................
1.3.2 Innovative ASUS features ...............................................
1.4 Before you proceed .....................................................................
1.5 Motherboard overview .................................................................
1.5.1 Placement direction ........................................................
1.5.2 Screw holes ....................................................................
1.5.3 Motherboard layout .........................................................
1.5.4 Layout contents ...............................................................
1.6 Central Processing Unit (CPU) ...................................................
1.6.1 Installing the CPU ...........................................................
1.6.2 Installing the heatsink and fan ......................................
1.7 System memory .........................................................................
1.7.1 Overview ........................................................................
1.7.2 Memory congurations ..................................................
1.7.3 Installing a DIMM ..........................................................
1.7.4 Removing a DIMM ........................................................
1.8 Expansion slots ..........................................................................
1.8.1 Installing an expansion card .........................................
1.8.2 Conguring an expansion card .....................................
1.8.3 PCI slot .........................................................................
1.8.4 PCI Express 2.0 x1 slots ...............................................
1.8.5 PCI Express 2.0 x16 slot ...............................................
1.9 Jumpers ......................................................................................
1.10 Connectors .................................................................................
1.10.1 Rear panel ports ...........................................................
1.10.2 Internal connectors .......................................................
1-1
1-1
1-1
1-3
1-5
1-6
1-6
1-6
1-7
1-7
1-8
1-8
1-10
1-11
1-11
1-12
1-16
1-16
1-17
1-17
1-17
1-17
1-17
1-17
1-18
1-20
1-20
1-21
iii
Contents
1.11 Software support ........................................................................ 1-27
1.11.1 Installing an operating system ......................................
1.11.2 Support DVD information ..............................................
Chapter 2 BIOS information
2.1 Managing and updating your BIOS ............................................ 2-1
2.1.1 ASUS Update utility ........................................................
2.1.2 ASUS EZ Flash 2 utility ...................................................
2.1.3 ASUS CrashFree BIOS 3 ................................................
2.2 BIOS setup program ....................................................................
2.2.1 BIOS menu screen ..........................................................
2.2.2 Menu bar .........................................................................
2.2.3 Navigation keys ...............................................................
2.2.4 Menu items .....................................................................
2.2.5 Submenu items ...............................................................
2.2.6 Conguration elds .........................................................
2.2.7 Pop-up window ...............................................................
2.2.8 Scroll bar .........................................................................
2.2.9 General help ...................................................................
2.3 Main menu ....................................................................................
2.3.1 System Time [xx:xx:xx] ...................................................
2.3.2 System Date [Day xx/xx/xxxx] .........................................
2.3.3
2.3.4 SATA Conguration .........................................................
2.3.5 System Information .........................................................
2.4 Advanced menu ...........................................................................
2.4.1 JumperFree Conguration ............................................
2.4.2 CPU Conguration ........................................................
2.4.3 Chipset ..........................................................................
2.4.4 Onboard Devices Conguration ....................................
2.4.5 PCIPnP .........................................................................
2.4.6 USB Conguration ........................................................
SATA3G_1~6 .................................................................. 2-7
1-27
1-27
2-1
2-2
2-3
2-4
2-5
2-5
2-5
2-6
2-6
2-6
2-6
2-6
2-6
2-7
2-7
2-7
2-8
2-9
2-9
2-10
2-12
2-14
2-15
2-16
2-16
iv
Contents
2.5 Power menu ................................................................................ 2-17
2.5.1 Suspend Mode [Auto] ...................................................
2.5.2 ACPI 2.0 Support [Enabled] ..........................................
2.5.3 ACPI APIC Support [Enabled] .......................................
2.5.4 APM Conguration ........................................................
2.5.5 HW Monitor Conguration .............................................
2.5.6 Anti Surge Support [Enabled] .......................................
2.6 Boot menu ..................................................................................
2.6.1 Boot Device Priority ......................................................
2.6.2 Boot Settings Conguration ..........................................
2.6.3 Security .........................................................................
2.7 Tools menu .................................................................................
2.7.1 ASUS EZ Flash 2 ..........................................................
2.7.2 ASUS O.C. Prole .........................................................
2.8 Exit menu ....................................................................................
Appendices
Notices .......................................................................................................A-1
ASUS contact information .......................................................................A-3
2-17
2-17
2-17
2-17
2-18
2-18
2-19
2-19
2-19
2-20
2-22
2-22
2-22
2-23
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.
vi

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.
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.
vii
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying to complete a task.
CAUTION: Information to prevent damage to the components when trying to complete a task
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 Used to emphasize a word or a phrase.
<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
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 (+).
viii
M5A78L-M LX Series specications summary
APU
Chipset
Front side bus
Memory
Graphics
Expansion slots
Storage / RAID
LAN
Audio
USB
AMD® Socket AM3+ for AMD® FX™ / Phenom™ II / Athlon™ II / Sempron™
100 series processors
AMD® Cool n’ Quiet™ Technology
Supports CPU up to 125W
• Refer to www.asus.com for the AMD® APU support list.
AMD® 760G (780L) / SB710
Up to 5200 MT/s HyperTransport™ 3.0 interface
2 x 240-pin DIMM slots support maximum 16GB unbuffered ECC and non-
ECC DDR3 1866(O.C.) / 1600(O.C.) / 1333 / 1066 MHz memory modules
Dual-channel memory architecture
• AMD® FX™ Series CPU on this motherboard supports up to DDR3 1866MHz as its standard memory frequency.
• Due to CPU specications, AMD DDR3 1066MHz. With ASUS design, this motherboard can support up to DDR3
1333MHz.
• When overclocking, some AMD CPU models may not support DDR3 1600 MHz
or higher frequency DIMMs.
• Refer to
www.asus.com for the latest Memory QVL (Qualied Vendors List).
• Use a 64-bit Windows motherboard.
®
100 and 200 series CPUs support up to
®
OS if you want to install 4GB or more memory on the
Integrated AMD® Radeon™ HD 3000 GPU
Supports maximum shared memory of 1GB
Supports RGB with a maximum resolution of 2560 x 1440 (@75Hz)
Supports Microsoft® DirectX 11
Supports Hybrid CrossFireX™
• Refer to www.amd.com for the discrete GPUs that support Hybrid CrossFireX™.
1 x PCIe 2.0 x16 slot
2 x PCIe 2.0 x1 slots
1 x PCI slot
6 x Serial ATA 3.0Gb/s connectors support RAID 0, RAID 1, RAID 10 and
JBOD congurations
Realtek® RTL8111E PCIe Gigabit LAN controller
Realtek® ALC887 8-channel High Denition Audio CODEC
• Use a chassis with HD audio module in the front panel to support an 8-channel audio output.
Supports up to 10 x USB 2.0/1.1 ports (6 ports at the mid-board, 4 ports at
the back panel)
(continued on the next page)
ix
M5A78L-M LX Series specications summary
ASUS unique features
Special features
Back Panel I/O ports
Internal I/O connectors / buttons / switches
BIOS
Support DVD
Form factor
ASUS Core Unlocker
ASUS Turbo Key
ASUS Q-Fan
ASUS AI Charger
ASUS EPU-4 Engine
ASUS Anti-Surge
ASUS EZ Flash2
ASUS MyLogo2
ASUS C.P.R. (CPU Parameter Recall)
100% All high quality conductive polymer (M5A78L-M LX PLUS only)
1 x PS/2 mouse port
1 x PS/2 keyboard port
1 x COM port
1 x LPT port
1 x D-Sub output port
1 x LAN (RJ-45) port
4 x USB 2.0/1.1 ports
8-channel audio I/O ports (3-jack)
3 x USB 2.0/1.1 connectors support additional 6 USB 2.0/1.1 ports
6 x SATA 3.0Gb/s connectors
1 x CPU fan connector
1 x Chassis fan connector
1 x Front panel audio connector
1 x S/PDIF output connector
1 x System panel connector
1 x Speaker connector
1 x 24-pin ATX power connector
1 x 4-pin ATX 12V power connector
16 Mb Flash ROM, AMI BIOS, PnP, DMI2.0 WfM2.0, ACPI2.0a, SM BIOS 2.5
Drivers
ASUS Update
ASUS utilities
Anti-Virus software (OEM version)
MicroATX form factor: 9.6 in x 8.0 in (24.4 cm x 20.3 cm)
*Specications are subject to change without notice.
x

Chapter 1

Product introduction

1.1 Welcome!

Thank you for buying an ASUS® M5A78L-M LX Series motherboard! The motherboard delivers a host of new features and latest technologies, making it another
standout in the long line of ASUS quality motherboards! Before you start installing the motherboard, and hardware devices on it, check the items in
your package with the list below.

1.2 Package contents

Check your motherboard package for the following items.
Motherboard ASUS M5A78L-M LX Series motherboard
Cables 2 x Serial ATA 3.0Gb/s cables
Accessories 1 x I/O shield Application DVD ASUS motherboard Support DVD Documentation User Manual
• M5A78L-M LX Series motherboards include M5A78L-M LX PLUS and M5A78L-M LX V2
two models. The package contents vary from models. The layout illustrations in this user guide are for M5A78L-M LX PLUS only.
• If any of the items is damaged or missing, contact your retailer.

1.3 Special features

1.3.1 Product highlights

AMD® FX™ / Phenom™ II / Athlon™ II / Sempron™ 100 series
ASUS M5A78L-M LX Series 1-1
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 (O.C.) support
This motherboard supports DDR3 memory that features data transfer rates of 1866 (O.C.)/1600 (O.C.)/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 / Windows® 7 OS 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.
100% All High-quality Conductive Polymer Capacitors (M5A78L-M LX PLUS only)
This motherboard uses all high-quality conductive polymer capacitors for durability, improved lifespan, and enhanced thermal capacity.
Chapter 1: Product introduction1-2

1.3.2 Innovative ASUS features

1 2
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 Turbo Key
ASUS Turbo Key allows you to turn the PC power button into an overclocking button. After the easy setup, Turbo Key boosts performances without interrupting ongoing work or games, simply through pressing the button.
ASUS MyLogo2™
Turn your favorite photos into 256-color boot logos to personalize your
system.
ASUS EZ Flash 2
ASUS EZ Flash 2 allows you to update the BIOS from a USB ash disk
before entering the OS.
ASUS Q-Fan
ASUS Q-Fan technology intelligently adjusts the CPU fan speed
according to system loading to ensure a quiet, cool, and efcient
operation.
ASUS Anti-Surge Protection
This special design prevents expensive devices and the motherboard from damage caused by power surges from switching power supply (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.
C.P.R. (CPU Parameter Recall)
The BIOS C.P.R. feature automatically restores the CPU default settings when the system hangs due to overclocking failure. C.P.R. eliminates the need to open the system chassis and clear the RTC data. Simply shut down and reboot the system, and the BIOS automatically restores the CPU parameters to their default settings.
ASUS M5A78L-M LX Series 1-3
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.
Chapter 1: Product introduction1-4

1.4 Before you proceed

SB_PWR
ON
Standby Power Powered Off
OFF
M5A78L-M LX PLUS
M5A78L-M LX PLUS Onboard LED
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.
Onboard 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 LX Series 1-5
M5A78L-M LX PLUS

1.5 Motherboard overview

1.5.1 Placement direction

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

1.5.2 Screw holes

Place six screws into the holes indicated by circles to secure the motherboard to the chassis.
DO NOT overtighten the screws! Doing so can damage the motherboard.
Place this side towards the rear of the chassis.
Chapter 1: Product introduction1-6

1.5.3 Motherboard layout

M5A78L-M LX PLUS
PCIEX16
PCIEX1_1
PCIEX1_2
PCI1
USB910 USB78 USB56
AAFP
SPDIF_OUT
ATX12V
EPU
EATXPWR
CPU_FAN
Lithium Cell
CMOS Power
Super
I/O
ALC 887
RTL
8111E
ICS
9LPRS483
KBMS
16Mb BIOS
SB_PWR
SPEAKER
CLRTC
USBPW5-10
USBPW1-4
KBPWR
20.3cm(8.0in)
24.4cm(9.6in)
AMD
®
760G
AMD
®
SB710
SOCKET AM3+
DDR3 DIMM_A1 (64bit, 240-pin module)
DDR3 DIMM_B1 (64bit, 240-pin module)
SATA3G_3SATA3G_1
SATA3G_4SATA3G_2
SATA3G_5SATA3G_6
CHA_FAN
F_PANEL
AUDIO
LAN1_USB12
USB34
LPT
COM1
VGA
2 3 4
5 6
3
1
101112 89 21314
7

1.5.4 Layout contents

Connectors/Jumpers/Slots Page Connectors/Jumpers/Slots Page
1. Keyboard power (3-pin KBPWR) 1-19 8. System panel connector (10-1 pin F_PANEL) 1-24
2. USB device wake-up (3-pin USBPW1-4,
USBPW5-10)
3. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
4. CPU and chassis fan connectors (4-pin
CPU_FAN and 3-pin CHA_FAN)
5. AMD CPU socket 1-8 12. Onboard LED (SB_PWR) 1-5
6. DDR3 DIMM sockets 1-11 13. Front panel audio connector (10-1 pin AAFP) 1-21
7. Serial ATA connectors (7-pin SATA1-6) 1-23 14. Clear RTC RAM (CLRTC) 1-18
ASUS M5A78L-M LX Series 1-7
1-19 9. Speaker connector (4- pin SPEAKER) 1-24
1-22 10. USB connectors (10-1 pin USB56, USB78,
USB910)
1-26 11. Digital audio connector (4-1 pin SPDIF_OUT) 1-25
1-25

1.6 Central Processing Unit (CPU)

M5A78L-M LX PLUS
M5A78L-M LX PLUS CPU AM3+
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!

1.6.1 Installing the CPU

To install a CPU:
1. Locate the CPU socket on the motherboard.
2. Press the lever sideways to unlock the socket, then lift it up to a 90°-100° angle.
Ensure that the socket lever is lifted up to a 90°-100° angle; otherwise, the CPU will not t
in completely.
3. Position the CPU above the socket such that the CPU
corner with the gold triangle matches the socket corner with a small triangle.
4. Carefully insert the CPU into the socket until it ts in place.
The CPU ts only in one correct orientation.
DO NOT force the CPU into the socket to prevent bending the pins and damaging the CPU!
Socket lever
Small triangle
Gold triangle
Chapter 1: Product introduction1-8
5. When the CPU is in place, push down the socket
M5A78L-M LX PLUS
M5A78L-M LX PLUS CPU fan connector
CPU_FAN
GND CPU FAN PWR CPU FAN IN CPU FAN PWM
lever to secure the CPU. The lever clicks on the side tab to indicate that it is locked.
6. Install a CPU heatsink and fan following the
instructions that comes with the heatsink package. You can also refer to section 1.6.2 Installing heatsink and fan for instructions.
7. Connect the CPU fan cable to the CPU_FAN connector on the motherboard.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this connector.
ASUS M5A78L-M LX Series 1-9

1.6.2 Installing the heatsink and fan

1
3
4
5
2
Ensure that you use only AMD-certied heatsink and fan assembly.
To install the CPU heatsink and fan:
1. Place the heatsink on top of the installed CPU, ensuring that the heatsink ts properly
on the retention module base.
• The retention module base is already installed on the motherboard upon purchase.
• You do not have to remove the retention module base when installing the CPU or installing other motherboard components.
• If you purchased a separate CPU heatsink and fan assembly, ensure that a Thermal Interface Material is properly applied to the CPU heatsink or CPU before you install the heatsink and fan assembly.
CPU Fan
CPU Heatsink
Retention bracket
Retention Module Base
Retention bracket lock
Your boxed CPU heatsink and fan assembly should come with installation instructions for the CPU, heatsink, and the retention mechanism. If the instructions in this section do not match the CPU documentation, follow the latter.
2. Attach one end of the retention bracket to the retention module base.
Chapter 1: Product introduction1-10
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