Asus M3A78-EH User Manual Page 49
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ASUS M3A78-EH 1-37
10. System panel connector (20-8 pin PANEL)
This connector supports several chassis-mounted functions.
•
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.
•
Hard disk drive activity LED
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity
LED cable to this connector. The IDE LED lights up or ashes when data is
read from or written to the HDD.
•
System warning speaker
This 4-pin connector is for the chassis-mounted system warning speaker. The
speaker allows you to hear system beeps and warnings.
•
Power/Soft-off button
This 2-pin connector is for the system power button. Pressing the power
button turns the system ON or puts the system in SLEEP or SOFT-OFF
mode depending on the BIOS settings. Pressing the power switch for more
than four seconds while the system is ON turns the system OFF.
•
Reset button
This 2-pin connector is for the chassis-mounted reset button for system
reboot without turning off the system power.
R
M3A78-EH
M3A78-EH
System Panel Connector
PANEL
PLED-
+5V
Speaker
SPEAKER
PLED
Ground
Reset
Reset
Ground
Ground
PLED+
IDE_LED-
IDE_LED+
+IDE_LED
PWR
Ground
PWRSW
- 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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