Asus M4A78-EM User Manual

M4A78-EM/1394Motherboard

E4623

First Edition V1

April 2009

Copyright © 2009 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, modified or altered, unless such repair, modification of alteration is authorized in writing byASUS; 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 identification or explanation and to the owners’ benefit, without intent to infringe.

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Contents

Notices.........................................................................................................	vi
Safety information......................................................................................	vii
About this guide.........................................................................................	vii
M4A78-EM/1394 specifications summary.................................................	ix

Chapter 1:		Product introduction
1.1	Welcome!.......................................................................................		1-1
1.2	Package contents.........................................................................		1-1
1.3	Special features............................................................................		1-1
	1.3.1	Product highlights ............................................................	1-1
	1.3.2	Innovative ASUS features ................................................	1-3
1.4	Before you proceed......................................................................		1-5
1.5	Motherboard overview.................................................................		1-6
	1.5.1	Placement direction .........................................................	1-6
	1.5.2	Screw holes .....................................................................	1-6
	1.5.3	Motherboard layout ..........................................................	1-7
	1.5.4	Layout contents . ..............................................................	1-7
1.6	Central Processing Unit (CPU)....................................................		1-8
	1.6.1	Installing the CPU ............................................................	1-8
	1.6.2	Installing the heatsink and fan .......................................	1-10
1.7	System memory..........................................................................		1-11
	1.7.1	Overview .........................................................................	1-11
	1.7.2	Memory configurations . .................................................	1-12
	1.7.3	Installing a DIMM ...........................................................	1-16
	1.7.4	Removing a DIMM .........................................................	1-16
1.8	Expansion slots..........................................................................		1-17
	1.8.1	Installing an expansion card ..........................................	1-17
	1.8.2	Configuring an expansion card ......................................	1-17
	1.8.3	PCI slots . .......................................................................	1-17
	1.8.4	PCI Express x1 slot . ......................................................	1-17
	1.8.5	PCI Express x16 slot . ....................................................	1-17
1.9	Jumpers	.......................................................................................	1-18
1.10	Connectors..................................................................................		1-19
	1.10.1 ............................................................	Rear panel ports	1-19
	1.10.2 ........................................................	Internal connectors	1-22

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Contents

1.11 Software support........................................................................		1-29
1.11.1	Installing an operating system.......................................	1-29
1.11.2	Support DVD information...............................................	1-29

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
	2.1.3	ASUS CrashFree BIOS 3 utility.......................................	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	Configuration fields..........................................................	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....................................................................	2-7
	2.3.2	System Date....................................................................	2-7
	2.3.3	Primary IDE Master/Slave, SATA1/2/3/5/6, E-SATA.......	2-7
	2.3.4	SATAConfiguration..........................................................	2-8
	2.3.5	System Information..........................................................	2-8
2.4	Advanced menu............................................................................		2-9
	2.4.1	JumperFree Configuration...............................................	2-9
	2.4.2	CPU Configuration..........................................................	2-11
	2.4.3	Chipset...........................................................................	2-11
	2.4.4	Onboard Devices Configuration....................................	2-13
	2.4.5	PCI PnP.........................................................................	2-13
	2.4.6	USB Configuration.........................................................	2-14
2.5	Power menu................................................................................		2-14
	2.5.1	Suspend Mode..............................................................	2-15
	2.5.2	ACPI 2.0 Support...........................................................	2-15

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Contents

	2.5.3	ACPIAPIC Support.......................................................	2-15
	2.5.4	APM Configuration........................................................	2-15
	2.5.5	HW Monitor Configuration.............................................	2-16
2.6	Boot menu...................................................................................		2-16
	2.6.1	Boot Device Priority.......................................................	2-17
	2.6.2	Boot Settings Configuration...........................................	2-17
	2.6.3	Security..........................................................................	2-17
2.7	Tools menu..................................................................................		2-19
	2.7.1	ASUS EZ Flash 2..........................................................	2-19
	2.7.2	Express Gate.................................................................	2-19
	2.7.3	AI NET 2........................................................................	2-19
2.8	Exit menu.....................................................................................		2-20

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, and

•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 modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.

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.

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://green.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.

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Safety information

Electrical safety

•To prevent electric shock hazard, disconnect the power cable from the electric outlet before relocating the system.

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

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

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

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

•If the power supply is broken, do not try to fix it by yourself. Contact a qualified service technician or your retailer.

Operation safety

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

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

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

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

•Place the product on a stable surface.

•If you encounter technical problems with the product, contact a qualified service technician or your retailer.

About this guide

This user guide contains the information you need when installing and configuring 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.

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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.

Where to find 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 flyers, that may have been added by your dealer. These documents are not part of the standard package.

Typography

Bold text	Indicates a menu or an item to select.
Italics	Used to emphasize a word or a phrase.
<Key>	Keys enclosed in the less-than and greater-than sign means
	that you must press the enclosed key.
	Example: <Enter> means that you must press the Enter or
	Return key.
<Key1>+<Key2>+<Key3>	If you must press two or more keys simultaneously, the key
	names are linked with a plus sign (+).
	Example: <Ctrl>+<Alt>+<D>

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M4A78-EM/1394 specifications summary

CPU	AMD® Phenom™ X4 / Phenom™ X3 /Athlon™ X2 /
	Athlon™ / Sempron™ processors (socketAM2+/AM2)
	Compatible with Phenom™ II /Athlon™ X4 /Athlon™ X3 /
	Athlon™ X2 processors (AM3 CPU)
	Supports 45nm CPU
	AMD Cool ‘n’ Quiet™ 2.0 Technology (depends on CPU
	type)
	Supports CPU up to 125W
	* Refer to www.asus.com for the AMD CPU support list

Chipset

Front side bus

AMD® 780G / SB710

Up to 5200MT/s HyperTransport™ 3.0 interface for AM3 /AM2+ CPU

2000 / 1600MT/s forAM2 CPU

Memory	Dual channel memory architecture
	- 4 x 240-pin DIMM sockets support unbuffered ECC
	and non-ECC 1200(O.C.)/1066/800/667 MHz
	DDR2 memory modules
	- Supports up to 16GB system memory
	* DDR2 1200(O.C.)/1066 is supported byAM2+ /AM3 CPU
	only.
	** We recommend that you install the DDR2 1200 memory
	modules on the yellow slots for better performance.
	*** Refer to www.asus.com or this user manual for the
	Memory QVL (Qualified Vendors List).
	**** When you install a total memory of 4GB capacity
	or more, Windows® 32-bit operating system may only
	recognize less than 3GB. We recommend a maximum
	of 3GB system memory if you are using a Windows®
	32-bit operating system.
Graphics	IntegratedATI Radeon™ HD 3200 GPU
	Supports HDMI™ with max. resolution up to
	1920x1200 (1080P)
	Supports DVI-D (HDCP compliant) with max. resolution up to
	2560x1600@60Hz dual-link
	Supports RGB with max. resolution up to 2048x1536@85Hz
	Supports Hybrid CrossFireX™ (for Windows® Vista only)
	Dual VGA output supports:
	RGB & DVI
	RGB & HDMI
	Maximum shared memory up to 256MB
	* Refer to www.amd.com for the discrete GPUs which
	support Hybrid CrossFireX™.
	** The minimum system requirements of playing HD-DVD
	and Blu-ray disc: Graphics shared memory of 256MB /
	Dual-Core CPU / 1GB dual-channel DDR2 667 or
	single-channel DDR2 800
	(continued on the next page)

ix

M4A78-EM/1394 specifications summary

Expansion slots	1 x PCIe x16 slot
	1 x PCIe x1 slot
	2 x PCI slots
Storage / RAID	AMD® SB710 southbridge:
	- 1 x UltraDMA133/100/66 connector
	- 5 x SerialATA3Gb/s connectors support RAID 0,
	RAID 1, and RAID 0+1 configurations (for Windows®
	Vista only)
	- 1 x eSATA3Gb/s port supports JBOD
Audio	Realtek® ALC887 High DefinitionAudio 8-channel CODEC
	Supports Jack-detect and Multi-streaming technologies
	Supports S/PDIF_OUT interface
USB	Supports up to 12 USB 2.0/1.1 ports (6 ports at mid-board,
	6 ports at the back panel)

LAN

ASUS special features

PCIe Gigabit LAN

ASUS Q-Fan

ASUS CrashFree BIOS3

ASUS EZ Flash2

ASUS MyLogo2

ASUS Express Gate

ASUSAI NET2

ASUS EPU-4 Engine

ASUS Turbo Key

ASUS overclocking SFS (Stepless Frequency Selection) from 200MHz to features 550MHz at 1MHz increment

ASUS C.P.R. (CPU Parameter Recall)

Back panel I/O ports 1 x PS/2 Keyboard / Mouse Combo port 1 x Optical S/PDIF_OUT port

1 x IEEE 1394a port

1 x VGA port

1 x HDMI port

1 x DVI port

1 x eSATA port

1 x LAN (RJ-45) port

6 x USB 2.0/1.1 ports

8-channel audio ports

(continued on the next page)

M4A78-EM/1394 specifications summary

Internal I/O connectors

BIOS

Accessories

Support DVD

Form factor

3 x USB 2.0 connectors support additional 6 USB 2.0 ports

1 x IDE connector

1 x COM connector

1 x LPT connector

1 x IEEE 1394a connector

5 x SATA connectors

1 x High definition front panel audio connector

1 x CD audio-in connector

1 x S/PDIF out connector

1 x CPU fan connector

1 x Power fan connector

1 x Chassis fan connector

1 x System panel connector

1 x 24-pin EATX power connector

1 x 4-pinATX 12V power connector

8Mb Flash ROM,AMI BIOS, PnP, DMI v2.0, WfM2.0, ACPI v2.0a, SM BIOS 2.5

1 x Serial ATA cable

1 x UltraDMA133/100/66 cable

1 x I/O shield

1 x User Manual

Drivers

ASUS PC Probe II

ASUS LiveUpdate Utility

Anti-Virus software (OEM version)

MicroATX form factor: 9.6 in x 9.6 in (24.4 cm x 24.4 cm)

*Specifications are subject to change without notice.

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Chapter 1

Product introduction

1.1Welcome!

Thank you for buying an ASUS® M4A78-EM/1394 motherboard!

The motherboard delivers a host of new features and latest technologies, making it another standout in the long line ofASUS quality motherboards!

Before you start installing the motherboard, and hardware devices on it, check the items in your package with the list below.

1.2Package contents

Check your motherboard package for the following items.

Motherboard	ASUS M4A78-EM/1394 motherboard
Cables	1 x Serial ATA cable
	1 x UltraDMA133/100/66 cable
Accessories	1 x I/O shield
Application DVD	ASUS motherboard Support DVD
Documentations	User Manual

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

1.3Special features

1.3.1Product highlights

AMD® Phenom™ II / Athlon™ x4 / Athlon™ x3 / Athlon™ x2 AM3 CPU support

This motherboard supports AMD® AM3 multi-core processors with unique L3 cache and delivers better overclocking capabilities with less power consumption. It features dual-channel DDR2 1066 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 45nm manufacturing process.

ASUS M4A78-EM/1394

1-1

AMD® Phenom™ x4 / Phenom™ x3 / Athlon™ x2 / Athlon™ / Sempron™ processors (socket AM2+/AM2)

This motherboard supports AMD® SocketAM2+ multi-core processors. It features dual-channel DDR2 1066 memory support and accelerates data transfer rate up to 5200MT/s via HyperTransport™ 3.0-based system bus. It also supports AMD® Cool ‘n’ Quiet Technology.

AMD® 780G chipset

TheAMD 780G Northbridge is anAMD chipset designed for both HT1.0 and HT 3.0 interface speed. It features the future mainstream Hybrid CrossFire technology that significantly optimizes your 3D performance.

HyperTransport™ 3.0 support

HyperTransport™ 3.0 technology provides 2.6 times more bandwidth than HT1.0 that radically improves system efficiency 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 DDR2 1200(O.C.) support

To attain top performance, ASUS engineers have successfully unleashed

DDR2 1200(O.C.) MHz to meet the higher bandwidth requirements of the latest operating system, 3D graphics, multimedia, and Internet applications.

• Due toAM3/AM2+ CPU limitation, only one DDR2 1200/1066 DIMM is supported per channel. When four DDR2 1200/1066 DIMMs are installed, all DIMMs run at 800MHz frequency by default for system stability.

•We recommend that you install the DDR2 1200 memory modules on the yellow slots for better performance.

•Ensure that you download the latest BIOS version at www.asus.com and purchase the memory modules on theASUS official Memory Qualified Vendors Lists (QVL).

Hybrid CrossFireX support

ATI Hybrid CrossFireX™ technology greatly boosts graphics performance with an onboard GPU and a discrete graphics card.

• Hybrid CrossFireX is supported by Windows® Vista OS only.

• Refer to www.amd.com for the discrete GPUs which support Hybrid CrossFireX™.

1-2	Chapter 1: Product introduction

IEEE 1394a support

IEEE 1394a interface provides high speed digital interface for audio / video appliances such as digital television, digital video camcorders, storage peripherials and other portable devices.

64-bit CPU support

64-bit computing, the next generation technology that replaces the current 32-bit architecture, delivers advanced system performance, faster memory access, and increased productivity. This motherboard provides excellent compatibility and flexibility by supporting both 64-bit and 32-bit architecture.

Gigabit LAN solution

The onboard LAN controller is a highly integrated Gb LAN controller. It is enhanced with anACPI management function to provide efficient power management for advanced operating systems.

Serial ATA 3Gb/s technology and SATA-On-The-Go

This motherboard supports hard drives based on the Serial ATA (SATA)

3Gb/s storage specification, delivering enhanced scalability and doubling the bus bandwidth for high-speed data retrieval and save. The external SATA port provides smart setup and hot-plug functions for easy data backup to external devices.

8-channel high definition audio

The onboard 8-channel HD audio (High DefinitionAudio, previously codenamedAzalia) CODEC enables high-quality 192KHz/24-bit audio output and jack-detect feature that automatically detects and identifies what types of peripherals are plugged into the audio I/O jacks and notifies users of inappropriate connection, which means there will be no more confusion of Line-in, Line-out, and Mic jacks.

1.3.2Innovative ASUS features

ASUS Express Gate

Express Gate is a unique OS built into the motherboard. Five seconds after bootup, you can instantly surf the Internet without entering the Windows® OS.

• The actual boot time depends on the system configuration.

• ASUS Express Gate supports file uploading from SATAHDDs, ODDs and USB drives and downloading to USB drives only.

•Express Gate complies with the OpenGL standard. Refer to http://support.asus.com for Express Gate source codes.

ASUS M4A78-EM/1394

1-3

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 file using the bundled support DVD or a USB flash disk that contains the BIOS file.

ASUS EZ Flash 2

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

ASUS Q-Fan

ASUS Q-Fan technology intelligently adjusts CPU fan speeds according to system loading to ensure a quiet, cool, and efficient operation.

ASUS EPU

ASUS EPU is a unique power saving technology that detects the current system loadings and adjusts the power consumption in real time.

Turbo Key

ASUS Turbo Key allows you to turn the PC power button into a physical overclocking button. After the easy setup, Turbo Key can boost performances without interrupting ongoing work or games—with just one touch!

ASUS AI NET2

ASUSAI NET2 remotely detects the cable connection immediately after turning on the system, and any faulty cable connections are reported back up to 100 meters at 1 meter accuracy.

Green ASUS

This motherboard and its packaging comply with the European Union’s

Restriction on the use of Hazardous Substances (RoHS). This is in line with the ASUS vision of creating environment-friendly and recyclable products/packaging to safeguard consumers’ health while minimizing the impact on the environment.

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.

1-4	Chapter 1: Product introduction

1.4Before you proceed

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

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

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

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

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

•Before you install or remove any component, 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 M4A78-EM/1394

1-5

1.5Motherboard overview

1.5.1Placement 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.

1.5.2Screw holes

Place eight 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.

1-6

Chapter 1: Product introduction

1.5.3Motherboard layout

1.5.4Layout contents

Connectors/Jumpers/Slots/LED		Page	Connectors/Jumpers/Slots/LED		Page
1.	IEEE 1394a port connector (10-1 pin IE1394_1)	1-25	10.	Clear RTC RAM (3-pin CLRTC)	1-18
2.	ATX power connectors (24-pin EATXPWR,	1-23	11.	Onboard LED (SB_PWR)	1-5
	4-pinATX12V)
3.	CPU SocketAM2+	1-8	12.	SATAconnectors (7-pin SATA1, SATA2,	1-25
				SATA3, SATA5, SATA6)
4.	DDR2 DIMM slots	1-11	13.	USB connectors (10-1 pin USB78, USB910,	1-26
				USB1112)
5.	CPU, power, and chassis fan connectors	1-22	14.	Digital audio connector (4-1 pin SPDIF_OUT)	1-27
	(4-pin CPU_FAN, 3-pin PWR_FAN,
	and 3-pin CHA_FAN)
6.	LPT connector (26-1 pin LPT)	1-23	15.	Front panel audio connector (10-1 pinAAFP)	1-27
7.	Serial port connector (10-1 pin COM1)	1-22	16.	Optical drive audio connector (4-pin CD)	1-26
8.	IDE connector (40-1 pin PRI_IDE)	1-24	17.	PCI / PCIe x 1 / PCIe x 16 slots	1-17
9.	System panel connector (20-8 pin PANEL)	1-28

ASUS M4A78-EM/1394

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