Asus M3A78-EMH HDMI User Manual Page 47
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ASUS M3A78-EMH HDMI 1-35
5. CPU and Chassis Fan connectors
(4-pin CPU_FAN, 3-pin CHA_FAN)
The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or
a total of 1A~2.22A (26.64W max.) at +12V. Connect the fan cables to the fan
connectors on the motherboard, making sure that the black wire of each cable
matches the ground pin of the connector.
Do not forget to connect the fan cables to the fan connectors. Insufcient air
ow inside the system may damage the motherboard components. These are
not jumpers! DO NOT place jumper caps on the fan connectors.
Only CPU Fan supports Q-Fan.
M3A78-EMH HDMI
M3A78-EMH HDMI Fan Connectors
CPU_FAN
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
CHA_FAN
GND
Rotation
+12V
6. Serial port connector (10-1 pin COM1)
The connector is for a serial (COM) port. Connect the serial port module
cable to the connector, then install the module to a slot opening at the back of
the system chassis.
The serial port bracket (COM1) is purchased separately.
M3A78-EMH HDMI
COM Port Connector
PIN1
COM1
M3A78-EMH HDMI
- Motherboard 1
- First Edition 2
- January 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
- 1.2 Package contents 14
- 1.3 Special features 14
- ASUS M3A78-EMH HDMI 1-3 15
- PCI Express™ interface 16
- PCI Express 2.0 support 16
- DDR2 memory support 16
- DVI Interface 16
- Hybrid CrossFireX 16
- Gigabit LAN solution 17
- USB 2.0 technology 17
- ASUS Q-Fan technology 18
- ASUS MyLogo2™ 18
- ASUS CrashFree BIOS 3 18
- ASUS EZ Flash 2 18
- 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
- 1.7 System memory 26
- DDR2-1066 MHz capability 28
- DDR2-800 MHz capability 29
- DDR2-667MHz capability 30
- DDR-533MHz capability 32
- 1.7.3 Installing a DIMM 33
- 1.7.4 Removing a DIMM 33
- 1.8 Expansion slots 34
- Interrupt assignments 35
- 1.8.3 PCI slots 37
- 1.8.4 PCI Express x1 slot 37
- 1.8.5 PCI Express x16 slot 37
- 1.9 Jumpers 38
- M3A78-EMH HDMI 39
- 3. HDJ1 Setting 40
- 1.10 Connectors 41
- 1.10.2 Internal connectors 44
- IDE Connector 45
- Rotation 47
- Right Audio Channel 48
- Left Audio Channel 48
- ASUS M3A78-EMH HDMI 1-39 51
- System Panel Connector 51
- BIOS setup 53
- DOS environment 54
- XP environment 54
- 2.1.2 AFUDOS utility 55
- Updating the BIOS le 56
- ASUS M3A78-EMH HDMI 2-5 57
- 2-6 Chapter 2: BIOS setup 58
- ASUS M3A78-EMH HDMI 2-7 59
- 60
- 2.1.5 ASUS Update utility 61
- 2-10 Chapter 2: BIOS setup 62
- 2.2 BIOS setup program 64
- 2.2.1 BIOS menu screen 65
- 2.2.2 Menu bar 65
- 2.2.4 Menu items 66
- 2.2.5 Sub-menu items 66
- 2.2.6 Conguration elds 66
- 2.2.3 Navigation keys 66
- 2.2.7 General help 66
- 2.2.8 Pop-up window 67
- 2.3 Main menu 68
- Type [Auto] 69
- LBA/Large Mode [Auto] 69
- 2.3.5 SATA 1-6 70
- 2.3.6 SATA Conguration 71
- 2.3.7 System Information 72
- 2.4 Advanced menu 73
- 2.4.3 CPU Conguration 74
- 2.4.4 Chipset 75
- NorthBridge Conguration 75
- Memory Conguration 76
- DCT Unganged Mode 76
- Power Down Enable [Enabled] 76
- Alternate VID [Auto] 77
- DRAM Timing Conguration 77
- Internal Graphics 78
- Serial Port1 Mode [Normal] 79
- Parallel Port IRQ [IRQ7] 79
- 2.4.6 PCIPnP 80
- 2.4.7 USB Conguration 81
- 2.5 Power menu 82
- 2.5.4 APM Conguration 83
- 2.5.5 Hardware Monitor 84
- 2.6 Boot menu 85
- 2-34 Chapter 2: BIOS setup 86
- feature 86
- 2.6.3 Security 87
- Change Supervisor Password 88
- Change User Password 89
- Password Check [Setup] 89
- 2.8 Exit menu 91
- 2-40 Chapter 2: BIOS setup 92
- Software 93
- 3.2 Support DVD information 94
- 3.2.2 Drivers menu 95
- 3.2.3 Utilities menu 96
- 3.2.4 Make Disk menu 97
- 3.2.5 Manual menu 97
- 3.2.7 Other information 98
- Technical support Form 99
- Filelist 99
- Browse this DVD 99
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