Quick Links. Download this manual See also: User Manual. Table of Contents. Page 2 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. Page 3: Table Of Contents Welcome! Page 5 Boot Device Priority
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Quick Links. Download this manual. M3N78 PRO. Table of Contents. Page 2 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.
Page 3: Table Of Contents Welcome! Page 4: Contents 4. Page 5 4. Page 6 Contents 5. If possible, disconnect all power cables from the existing system before you add a device. Page 9: About This Guide Refer to the following sources for additional information and for product and software updates.
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. Page Conventions Used In This Guide Conventions used in this guide To make sure that you perform certain tasks properly, take note of the following symbols used throughout this manual. Refer to www. Page Chapter 1: Product Introduction This chapter describes the motherboard features and the new technologies it supports.
Chapter 1: Product introduction Page 16 Chapter summary Welcome! Before you start installing the motherboard, and hardware devices on it, check the items in your package with the list below.
See page and for details. Page Asus Crystal Sound See page for details. Page Chapter 2: Hardware Information This chapter lists the hardware setup procedures that you have to perform when installing system components. It includes description of the jumpers and connectors on the motherboard. Chapter 2: Hardware information Page 24 Chapter summary Before you proceed 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. Page Motherboard Overview Motherboard overview Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it. Make sure to unplug the power cord before installing or removing the motherboard. Failure to do so can cause you physical injury and damage motherboard components.
Page Motherboard Layout 2. Page Layout Contents 2. The lever clicks on the side tab to indicate that it is locked.
Install a CPU heatsink and fan following the instructions that came with the heatsink package. Page 33 Push down the retention bracket lock on the retention mechanism to secure the heatsink and fan to the module base. Hardware monitoring errors can occur if you fail to plug this connector.
Page Memory Configurations 2. Part No. Chip Brand Part No. Page 43 Dual-channel memory configuration. Page Installing A Dimm 2. Failure to do so can cause severe damage to both the motherboard and the components. Page Interrupt Assignments 2. Page Pci Express 2. Page Connectors Side Speaker Out port gray. This port connects the side speakers in an 8-channel audio configuration. Refer to the audio configuration table on the next page for the function of the audio ports in 2, 4, 6, or 8-channel configuration.
Page Internal Connectors 2. Insert one end of the cable to this connector, then connect the other end to the signal connector at the back of the floppy disk drive. Pin 5 on the connector is removed to prevent incorrect cable connection when using a FDD cable with a covered Pin 5.
Page 53 Ultra DMA cable connector. This prevents incorrect insertion when you connect the IDE cable. Page 55 Never connect a cable to the USB connectors. Doing so will damage the motherboard! You can connect the front panel cable to the ASUS Q-Connector , red first, and then install the Q-Connector to the connector onboard if your chassis supports front panel ports. Page 57 Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components.
These are not jumpers! Do not place jumper caps on the fan connectors! Connect one end of the chassis intrusion sensor or switch cable to this connector. The chassis intrusion sensor or switch sends a high-level signal to this connector when a chassis component is removed or replaced. Page 61 This connector is for a serial COM port. Connect the serial port module cable to this connector, then install the module to a slot opening at the back of the system chassis.
The COM module is purchased separately. Page 62 Page 64 Powering up Page 66 Chapter summary Starting up for the first time Follow the instructions in Chapter 4. Click the Turn Off button to shut down the computer.
BIOS setup Refer to the corresponding sections for details on these utilities. DOS environment a. Insert a 1. Page Asus Ez Flash 2 Utility 4.
Follow these instructions to update the BIOS using this utility. Visit the ASUS website www. C Phoenix Technologies Ltd. Page Bios Setup Program The BIOS setup screens shown in this section are for reference purposes only, and may not exactly match what you see on your screen. Page Bios Menu Screen The BIOS setup screens shown in this chapter are for reference purposes only, and may not exactly match what you see on your screen.
Page Legend Bar A configurable field is enclosed in brackets, and is highlighted when selected. Refer to 4. Page Main Menu 4. Configuration options: [Disabled] [K , 3. There is a separate sub-menu for each IDE device. This is necessary so that you can write or read data from the hard disk. Make sure to set the partition of the Primary IDE hard disk drives to active.
There is a separate sub-menu for each SATA device. This item is not configurable. Take caution when changing the settings of the Advanced menu items. Incorrect field values can cause the system to malfunction. The values range from to Page Ai Net 2 4. Configuration options: [Auto] [Disable]. Configuration options: [64M] [M] [M] [M] The configuration options for this item vary depending on the total memory size you install on the motherboard.
When set to [Suspend], the system goes into Suspend mode after you press the power button for less than 4 seconds. Page Hardware Monitor Control function will not work and the fan you install will always run at full speed.
Floppy Disks Item Specific Help 1. Floppy Disks Allows you to assign a removable drive attached to the system.
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