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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 by ASUS; or (2) the serial number of the product is defaced or missing.
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.
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.
Refer to the following sources for additional information and for product and software updates. ASUS.websites The ASUS website provides updated information on ASUS hardware and software products. Refer to the ASUS contact information. Optional documentation Your product package may include optional documentation, such as warranty flyers, that may have been added by your dealer.
Conventions used in this guide To make sure 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.
ECC and non-ECC DDR2 1066*/800/667/533 MHz memory modules Supports up to 8GB system memory * DDR2 1066 is supported by AM2+ CPU only * Refer to www.asus.com or user manual for Memory QVL (Qualified Vendors List) Expansion.slots 1 x PCI Express™ x16 slot 1 x PCI Express™...
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M3A78-EMH HDMI specifications summary Audio ALC883 High Definition Audio 8-channel CODEC Supports Jack-Detect and Multistreaming Technologies Supports S/PDIF out interface Supports up to 12 USB 2.0/1.1 ports (8 ports at mid-board, 4 ports at back panel) PCIe Gigabit LAN ASUS.overclocking.
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M3A78-EMH HDMI specifications summary Accessories. User manual 3 x Serial ATA cables 3 x SATA power cables (include one 2 in 1 power cable) 1 x UltraDMA 133/100/66 cable 1 x FDD cable 1 x I/O shield Form.Factor uATX Form factor: 9.6’’ x 9.0’’ (24.5cm x 22.9cm)
® 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.
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HDMI (High-Definition Multimedia Interface) is the first and only industry-supported, uncompressed, all digital audio and video interface via a single cable and is HDCP compliant allowing playback of HD DVD, Blu-Ray Disc and other protected content. See page 1-31 for details. ASUS M3A78-EMH HDMI...
3D graphics and other memory demanding applications. DDR2 1066 is supported by some of the AM2+ CPUs only. Refer to www.asus.com for the supported CPU models. Chapter 1: Product introduction...
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I/O jacks and notifies users of inappropriate connection, meaning there will be no more confusion of Line-in, Line-out and Mic jacks. See pages 1-29, 1-37 and 2-27 for details. ASUS M3A78-EMH HDMI...
See page 2-34 for details. ASUS.CrashFree.BIOS.3. The ASUS CrashFree BIOS 3 allows users to restore corrupted BIOS data from a USB flash disk containing the BIOS file. This utility saves users the cost and hassle of buying a replacement BIOS chip. See page 2-6 for details.
The illustration below shows the location of the onboard LED. SB_PWR M3A78-EMH HDMI Standby Powered Power M3A78-EMH HDMI Onboard LED ASUS M3A78-EMH HDMI...
1.5.3. Screw.holes Place six (6) 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 M3A78-EMH HDMI ASUS M3A78-EMH HDMI...
1.6.1. Installing.the.CPU To install a CPU. Locate the CPU socket on the motherboard. M3A78-EMH HDMI M3A78-EMH HDMI CPU Socket AM2/AM2+ Unlock the socket by pressing the lever sideways, then lift it up to a 90°-100° angle. Socket.lever Make sure that the socket lever is lifted up to 90°-100° angle, otherwise the CPU does not fit in completely.
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Connect the CPU fan cable to the CPU_FAN connector on the motherboard. CPU_FAN M3A78-EMH HDMI M3A78-EMH HDMI CPU Fan Connector Do not forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this connector.
1.6.2. Installing.the.heatsink.and.fan The AMD Phenom™ FX / Phenom / Athlon™ 64 / Sempron™ / Athlon 64X2 / Athlon 64 FX processor requires a specially designed heatsink and fan assembly to ensure optimum thermal condition and performance. Make sure that you use only qualified heatsink and fan assembly. Follow these steps to install the CPU heatsink and fan.
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Push down the retention bracket lock on the retention mechanism to secure the heatsink and fan to the module base. ASUS M3A78-EMH HDMI 1-13...
240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are notched differently to prevent installation on a DDR DIMM socket. The figure illustrates the location of the DDR2 DIMM sockets: M3A78-EMH HDMI M3A78-EMH HDMI 240-pin DDR2 DIMM Sockets Channel Sockets Channel 1...
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The motherboard can support 8 GB physical memory on the operating system listed below. You may install a maximum of 2 GB DIMMs on each slot. 64-bit Windows XP Professional x64 Edition ® Windows Vista x64 Edition ® ASUS M3A78-EMH HDMI 1-15...
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Dual-channel memory configuration C*: Supports four modules inserted into both the yellow slots and the black slots as two pairs of Dual-channel memory configuration Visit the ASUS website for the latest DDR2 DIMM modules for this motherboard. 1-20 Chapter 1: Product introduction...
DIMM. DDR2 DIMM notch Support the DIMM lightly with your fingers when pressing the retaining clips. The DIMM might get damaged when it flips out with extra force. Remove the DIMM from the socket. ASUS M3A78-EMH HDMI 1-21...
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. Make sure to unplug the power cord before adding or removing expansion cards. Failure to do so may cause you physical injury and damage motherboard components.
SCI IRQ used by ACPI bus Standard PCI Graphics Adapter (VGA) (free) Microsoft PS/2 Port Mouse Numeric data processor Primary IDE controller (single fifo) Secondary IDE controller (single fifo) * These IRQs are usually available for ISA or PCI devices. ASUS M3A78-EMH HDMI 1-23...
BIOS. See page 2-26 for details. • The Surroundview function supports up to four monitors, two from the onboard VGA and DVI-D/HDMI out ports, with the other two from the VGA and DVI-D/HDMI out ports on an ATI graphics card. ASUS M3A78-EMH HDMI 1-25...
Normal Clear RTC (Default) M3A78-EMH HDMI Clear RTC RAM You do not need to clear the RTC when the system hangs due to overclocking. For system failure due to overclocking, use the C.P.R. (CPU Parameter Recall) feature. Shut down and reboot the system so the BIOS can automatically reset parameter settings to default values.
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USBPW5-8 PS2_USBPW1-4 USBPW9-12 M3A78-EMH HDMI M3A78-EMH HDMI USB Device Wake Up • 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 will not power up.
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HDM/DVI_TX D1N 14 M3A78-EMH HDMI HDMI_SCL HDMI_SCL HDMI_SDA HDMI_SDA M3A78-EMH HDMI HDJ1 Setting HDMI (Default) If you want to use HDMI feature, set the VBIOS TYPE item in the BIOS to [HDMI]. See page 2-26 for details. 1-28 Chapter 1: Product introduction...
Line Out port (lime). This port connects a headphone or a speaker. In 4-channel, 6-channel, and 8-channel configuration, the function of this port becomes Front Speaker Out. Microphone.port.(pink). This port connects a microphone. ASUS M3A78-EMH HDMI 1-29...
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Side Speaker Out port (gray). This port connects the side speakers in an 8-channel audio configuration. Refer to the audio configuration table for the function of the audio ports in 2, 4, 6, or 8-channel configuration. Audio 2, 4, 6, or 8-channel configuration Headset.
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Using the CPU/Memory of higher speed and bandwidth with the higher-version DVD player and drivers will upgrade the playback quality. 14. PS/2 keyboard port (purple). This port is for a PS/2 keyboard. ASUS M3A78-EMH HDMI 1-31...
The LPT (Line Printing Terminal) connector supports devices such as a printer. LPT standardizes as IEEE 1284, which is the parallel port interface on IBM PC-compatible computers. SLCT BUSY ACK# SLIN# ERR# M3A78-EMH HDMI STB# M3A78-EMH HDMI Parallel Port Connector 1-32 Chapter 1: Product introduction...
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• Use the 80-conductor IDE cable for Ultra DMA 133/100/66 IDE devices. If any device jumper is set as “Cable-Select,” make sure all other device jumpers have the same setting. M3A78-EMH HDMI IDE Connector M3A78-EMH HDMI ASUS M3A78-EMH HDMI 1-33...
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RSATA_RXP3 RSATA_TXN1 RSATA_TXN2 RSATA_TXN3 RSATA_TXP1 RSATA_TXP2 RSATA_TXP3 M3A78-EMH HDMI SATA Connectors Important.note.on.Serial.ATA Install the Windows XP Service Pack 1 before using Serial ATA. ® • For detailed instructions on how to configure RAID 0, RAID 1, and RAID 10, refer to the RAID manual in the support CD.
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The serial port bracket (COM1) is purchased separately. COM1 PIN1 M3A78-EMH HDMI M3A78-EMH HDMI COM Port Connector ASUS M3A78-EMH HDMI 1-35...
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USB56 USB78 USB910 USB1112 M3A78-EMH HDMI M3A78-EMH HDMI USB 2.0 Connectors Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard! The USB 2.0 module is purchased separately. Optical drive audio in connector (4-pin CD) These connectors allow you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, or MPEG card.
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Legacy AC 97-compliant pin definition pin definition AAFP M3A78-EMH HDMI M3A78-EMH HDMI Azalia Analog Front Panel Connector • We recommend that you connect a high-definition front panel audio module to this connector to avail of the motherboard high-definition audio capability. •...
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+3 Volts -12 Volts +3 Volts +3 Volts M3A78-EMH HDMI ATX Power Connector • We recommend that you use an ATX 12 V Specification 2.0-compliant power supply unit (PSU) with a minimum of 300 W power rating. This PSU type has 24-pin and 4-pin power plugs.
PLED M3A78-EMH HDMI Reset +IDE_LED PWRSW M3A78-EMH HDMI System Panel Connector • System power LED 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.
This chapter tells how to change the system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided. BIOS setup...
USB flash disk or the motherboard support CD when the BIOS file fails or gets corrupted.) ASUS EZ Flash 2 (Updates the BIOS using a floppy disk or a USB flash disk during POST.) ASUS Update (Updates the BIOS in Windows environment.)
Make sure that the floppy disk is not write-protected and has at least 1.2 MB free space to save the file. • The succeeding BIOS screens are for reference only. The actual BIOS screen displays may not be same as shown. ASUS M3A78-EMH HDMI...
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Updating the BIOS file To update the BIOS file using the AFUDOS utility: Visit the ASUS website (www.asus.com) and download the latest BIOS file for the motherboard. Save the BIOS file to a bootable floppy disk. Write the BIOS filename on a piece of paper. You need to type the exact BIOS filename at the DOS prompt.
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The utility verifies the file and starts updating the BIOS. A:\>afudos /iM3A78EMH.rom AMI Firmware Update Utility - Version 1.19(ASUS V2.07(03.11.24BB)) Copyright (C) 2002 American Megatrends, Inc. All rights reserved. WARNING!! Do not turn off power during flash BIOS Reading file ..done Reading flash ..done Advance Check ..Erasing flash ..done Writing flash ..0x0008CC00 (9%) Do not shut down or reset the system while updating the BIOS to...
2.1.3 ASUS CrashFree BIOS 3 utility The ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS file when it fails or gets corrupted during the updating process. You can update a corrupted BIOS file using the motherboard support CD , the floppy disk or the USB flash disk that contains the updated BIOS file.
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Restart the system after the utility completes the updating process. The recovered BIOS may not be the latest BIOS version for this motherboard. Visit the ASUS website (www.asus.com) to download the latest BIOS file. Recovering the BIOS from the USB flash disk To recover the BIOS from the USB flash disk: Insert the USB flash disk that contains BIOS file to the USB port.
2.1.4 ASUS EZ Flash 2 utility The ASUS EZ Flash 2 feature allows you to update the BIOS without having to go through the long process of booting from a floppy disk and using a DOS-based utility. The EZ Flash 2 utility is built-in the BIOS chip so it is accessible by pressing <Alt>...
DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure! 2.1.5 ASUS Update utility The ASUS Update is a utility that allows you to manage, save, and update the motherboard BIOS in Windows environment. The ASUS Update utility allows you ®...
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Updating the BIOS through the Internet To update the BIOS through the Internet: desktop by clicking Start. Launch the ASUS Update utility from the Windows ® >.Programs.>.ASUS.>.ASUSUpdate.>.ASUSUpdate. The ASUS Update main window appears. Select Update BIOS from the Select the ASUS FTP site nearest...
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Updating the BIOS through a BIOS file To update the BIOS through a BIOS file: Launch the ASUS Update utility from the Windows desktop by clicking Start. ® >.Programs.>.ASUS.>.ASUSUpdate.>.ASUSUpdate. The ASUS Update main window appears.
The BIOS setup screens shown in this section are for reference purposes only, and may not exactly match what you see on your screen. • Visit the ASUS website (www.asus.com) to download the latest BIOS file for this motherboard. 2-12...
The BIOS setup screens shown in this chapter are for reference purposes only, and may not exactly match what you see on your screen. • Visit the ASUS website (www.asus.com) to download the latest BIOS information. ASUS M3A78-EMH HDMI 2-13...
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. 2.2.4 Menu items The highlighted item on the menu bar displays the specific items for that menu.
3.5 in. 2.88M, 3.5 in. SATA4 :[Not Detected] Select Screen Select Item SATA5 :[Not Detected] Change Field SATA6 :[Not Detected] Select Field General Help SATA Configuration F10 Save and Exit ESC Exit System Information v02.61 (C)Copyright 1985-2007, American Megatrends, Inc. Navigation.keys Pop-up window Sub-menu items ASUS M3A78-EMH HDMI 2-15...
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. BIOS SETUP UTILITY Main Advanced Power Boot Tools Exit Main Settings...
When set to [Disabled], the data transfer from and to the device occurs one sector at a time. Configuration options: [Disabled] [Auto] ASUS M3A78-EMH HDMI 2-17...
Select an item then press <Enter> to display the sub-menu. BIOS SETUP UTILITY Main Options Storage Configuration Disabled OnChip SATA channel [Enabled] Enabled OnChip SATA Type [SATA] SATA IDE Combined Mode [Enabled] OnChip.SATA.Channel.[Enabled] Enables or disables OnChip SATA Channel. Configuration options: [Disabled] [Enabled] ASUS M3A78-EMH HDMI 2-19...
OnChip.SATA.Type.[SATA] This item appears only when you set the OnChip SATA Channel item to [Enabled]. Allows you to set the OnChip SATA Type. Configuration options: [SATA] [RAID] [AHCI] SATA.IDE.Combined.Mode.[Enabled] Enables or disables SATA IDE Combined Mode Configuration options: [Disabled] [Enabled] If you set the.SATA.IDE.Combined.Mode as Disabled, PORT 1-4 works well in all the three modes, while PORT 5-6 only works at [RAID] or [AHCI].
[Standard] - loads the standard settings for the system. [Overclock Profile] - loads overclocking profiles with optimal parameters for stability when overclocking. Spread Spectrum [Enable] Allows you to disable or set to Auto the clock generator spread spectrum. Configuration options: [Disabled] [Enable ASUS M3A78-EMH HDMI 2-21...
2.4.2 Hyper Transport Configuration The HyperTransport Hyper Transport Configuration link will run at this NODEO:PCI-X2 HT Link speed if it is slower Link Speed [Auto] than or equal to the Link Width [Auto] system clock and the board is capable. Link Speed [Auto] Allows you to set the HyperTransport link speed. Configuration options:[200MHz] [400MHz] [600MHz] [800 MHZ] [1 GHz] [Auto] Link Width [Auto] Allows you to set the HyperTransport link width.
Memory Configuration Advanced Enable Bank Memory Memory Configuration Interleaving Bank Interleaving [Auto] Channel Interleaving [Disabled] MemClk Tristate C3/ATLVID [Disabled] Memory Hole Remapping [Enabled] DCT Unganged Mode [Always] Power Down Enable [Enabled] Power Down Mode [Channel] Bank Interleaving [Auto] Allows you to enable the bank memory interleaving. Configuration options: [Disabled] [Auto] Channel Interleaving [Disabled] Allows you to enable the channel memory interleaving.
This option allows you to specify the alternate VID while in low power states. Configuration options: [1.150 V] [1.125 V] [1.100 V] [1.075 V] [1.050 V] [1.025 V] [1.000 V] [0.975 V] [0.950 V] [0.925 V] [0.900 V] [0.875 V] [0.850 V] [0.825 V] [0.800 V] [Auto] ASUS M3A78-EMH HDMI 2-25...
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Internal.Graphics GFX0-GPP-IGFX-PCI Internal Graphics GPP-GFX0-IGFX-PCI PCI-GFX0-GPP-IGFX Primary Video Controller [GFX0-GPP-IGFX-PCI] IGFX-GFX0-GPP-PCI UMA Frame Bufer Size [Auto] Surround View [Disabled] NB AZALIA [Enabled] VBIOS TYPE [DVI] Primary Video Controller [GFX0-GPP-IGFX-PCI] Configuration options: [GFX0-GPP-IGFX-PCI] [GPP-GFX0-IGFX-PCI] [PCI-GFX0-GPP-IGFX] [IGFX-GFX0-GPP-PCI] GFX0: VGA out port on a graphics card connected into a PCIE x16 slot GPP: VGA out port on a graphics card connected into a PCIE x1 slot IGFX...
2.4.6. 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.
If no USB device is detected, the legacy USB support is disabled. Configuration options: [Disabled] [Enabled] [Auto] USB.2.0.Controller.Mode.[HiSpeed] Allows you to configure the USB 2.0 controller in HiSpeed (480 Mbps) or Full Speed (12 Mbps). Configuration options: [FullSpeed] [HiSpeed] ASUS M3A78-EMH HDMI 2-29...
Power menu The Power menu items allow you to change the settings for the Advanced Configuration and Power Interface (ACPI) and the Advanced Power Management (APM). Select an item then press <Enter> to display the configuration options. BIOS SETUP UTILITY Main Advanced Power Boot Tools Exit...
Power on From S5 By PS/2 KB/MS [Disabled] Enables or disables PS/2 Keyboard/Mouse to generate a wake event. Configuration options: [Disabled] [Enabled] Power on From S5 By RTC Alarm [Disabled] Enables or disables RTC to generate a wake event. Configuration options: [Disabled] [Enabled] ASUS M3A78-EMH HDMI 2-31...
The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators. Smart Q-Fan Function [Disabled] Allows you to enable or disable the ASUS Q-Fan feature that smartly adjusts the fan speeds for more efficient system operation. Configuration options: [Disabled] [Enabled]...
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. Configuration options: [1st FLOPPY DRIVE] [Hard Drive] [ATAPI CD-ROM] [Disabled] ASUS M3A78-EMH HDMI 2-33...
Configuration options: [Disabled] [Enabled] Full Screen Logo [Enabled] This allows you to enable or disable the full screen logo display feature. Configuration options: [Disabled] [Enabled] Set this item to [Enabled] to use the ASUS MyLogo2 feature. ™ AddOn ROM Display Mode [Force BIOS] Sets the display mode for option ROM.
Supervisor Password :Not Installed disabled password. User Password :Not Installed Change Supervisor Password Change User Password Select Screen Select Item Enter Change General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2007, American Megatrends, Inc. ASUS M3A78-EMH HDMI 2-35...
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: Select the Change Supervisor Password item and press <Enter>.
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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. Configuration options: [Setup] [Always] ASUS M3A78-EMH HDMI 2-37...
2.7.1. ASUS.EZ.Flash.2 Allows you to run ASUS EZ Flash 2. When you press <Enter>, a confirmation message appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to confirm your choice. Please see section 2.1.4 for details.
Setup menus. When you select this option or if you press <F5>, a confirmation 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. ASUS M3A78-EMH HDMI 2-39...
The contents of the support DVD are subject to change at any time without notice. Visit the ASUS website(www.asus.com) for updates. 3.2.1 Running the support DVD Place the support DVD to the optical drive. The DVD automatically displays the Drivers menu if Autorun is enabled in your computer.
The drivers menu shows the available device drivers if the system detects installed devices. Install the necessary drivers to activate the devices. ASUS InstAll - Drivers Installation Wizard Launches the ASUS InstallAll - drivers installation wizard. Realtek Audio Driver Installs the Realtek audio driver.
This utility helps you keep your computer in healthy operating condition. ASUS.Update. The ASUS Update utility allows you to update the motherboard BIOS in a Windows environment. This utility requires an Internet connection either through a ®...
The Manual menu contains a list of supplementary user manuals. Click an item to open the folder of the user manual. Most user manual files are in Portable Document Format (PDF). Install the Adobe Acrobat Reader from the Utilities menu before opening a user manual ® ® file. ASUS M3A78-EMH HDMI...
3.2.6. ASUS.Contact.information Click the Contact tab to display the ASUS contact information. You can also find this information on the inside front cover of this user guide. 3.2.7. Other.information The icons on the top right corner of the screen give additional information on the motherboard and the contents of the support DVD.
Browse this DVD Displays the support DVD contents in graphical format. Technical support Form Displays the ASUS Technical Support Request Form that you have to fill out when requesting technical support. Filelist Displays the contents of the support DVD and a brief description of each in text format.