Asus M3A78-EH User Manual Page 23
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ASUS M3A78-EH 1-11
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.
5. When the CPU is in place, push
down the socket 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 came
with the heatsink package.
Gold triangle
Small triangle
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!
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.
R
M3A78-EH
M3A78-EH CPU Fan Connector
CPU_FAN
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
- Motherboard 1
- First Edition 2
- February 2008 2
- Contents 3
- Safety information 7
- About this guide 8
- Typography 9
- (continued on the next page) 10
- Product 13
- 1.1 Welcome! 14
- 1.3 Special features 14
- 1.2 Package contents 14
- HyperTransport 3.0 support 15
- DDR2 memory support 15
- 64-bit CPU support 15
- Gigabit LAN solution 17
- USB 2.0 technology 17
- 1.4 Before you proceed 19
- 1.5 Motherboard overview 20
- 1.5.2 Placement direction 21
- 1.5.3 Screw holes 21
- 1.6.1 Installing the CPU 22
- Gold triangle 23
- Small triangle 23
- Retention Module Base 24
- CPU Heatsink 24
- Retention bracket lock 24
- Retention bracket 24
- 1.7 System memory 26
- DDR2-800 MHz capability 28
- 1066 MHz capability 28
- DDR2-667MHz capability 29
- DDR-533MHz capability 31
- 1.7.3 Installing a DIMM 32
- 1.7.4 Removing a DIMM 32
- 1.8 Expansion slots 33
- Interrupt assignments 34
- 1.8.3 PCI slots 36
- 1.8.4 PCI Express x1 slot 36
- 1.8.5 PCI Express x16 slot 36
- Clear RTC 37
- (Default) 37
- M3A78-EH 38
- 1.10 Connectors 39
- Orient the red markings on 41
- NOTE: Orient the red markings 42
- (usually zigzag) on the ID 42
- Rotation 44
- ASUS M3A78-EH 1-33 45
- M3A78-EH USB 2.0 Connectors 45
- SPDIFOUT 46
- Legacy AC’97-compliant 47
- Azalia-compliant 47
- ASUS M3A78-EH 1-37 49
- System Panel Connector 49
- BIOS setup 51
- DOS environment 52
- XP environment 52
- 2.1.2 AFUDOS utility 53
- Updating the BIOS le 54
- ASUS M3A78-EH 2-5 55
- 2-6 Chapter 2: BIOS setup 56
- 2-8 Chapter 2: BIOS setup 58
- 2.1.5 ASUS Update utility 59
- 2-10 Chapter 2: BIOS setup 60
- ASUS M3A78-EH 2-11 61
- The ASUS Update utility is 61
- 2.2 BIOS setup program 62
- 2.2.1 BIOS menu screen 63
- 2.2.2 Menu bar 63
- 2.2.4 Menu items 64
- 2.2.5 Sub-menu items 64
- 2.2.6 Conguration elds 64
- 2.2.7 General help 64
- 2.2.3 Navigation keys 64
- 2.2.8 Pop-up window 65
- 2.3 Main menu 66
- Type [Auto] 67
- LBA/Large Mode [Auto] 67
- PIO Mode [Auto] 67
- 2.3.5 SATA 1-6 68
- 2.3.6 SATA Conguration 69
- 2.3.7 System Information 70
- 2.4 Advanced menu 71
- 2.4.3 CPU Conguration 72
- 2.4.4 Chipset 73
- Memory Conguration 74
- ECC Conguration 75
- Alternate VID [Auto] 76
- DRAM Timing Conguration 76
- Parallel Port IRQ [IRQ7] 77
- 2.4.6 PCIPnP 78
- 2.4.7 USB Conguration 79
- 2.5 Power menu 80
- 2.5.4 APM Conguration 81
- 2.5.5 Hardware Monitor 82
- 2.6 Boot menu 83
- 2.6.1 Boot Device Priority 84
- ASUS M3A78-EH 2-35 85
- 2.6.3 Security 86
- Change User Password 87
- Password Check [Setup] 87
- 2.7 Tools menu 88
- 2.8 Exit menu 89
- 2-40 Chapter 2: BIOS setup 90
- Software 91
- 3.2 Support DVD information 92
- 3.2.2 Drivers menu 93
- 3.2.3 Utilities menu 94
- 3.2.4 Make Disk menu 95
- 3.2.5 Manual menu 96
- 3.2.7 Other information 97
- Technical support Form 98
- Filelist 98
- Browse this DVD 98
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