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Mainboard PM945GC(V2.0)
11
Hard Drive LED Header: HDLED
If your case front panel has a hard drive LED cable, attach it to this header. The LED will flicker when
there is hard disk drive activity.
Reset Switch Header: RESET
This header can be attached to a momentary SPST switch (reset button) cable on your case front panel.
The switch is normally left open. When the switch closed, it will cause the mainboard to reset and run
the POST (Power-On Self Test).
Power-on Switch Header: PWRBTN
This header can be attached to a power switch cable on your case front panel. You can turn your system
on or off by pressing the button attached to this power switch cable.
2-pin Power LED Header: PWR LED
These mainboards provide a 2-pin power LED header. If there is a 2-pin power LED cord on your case
front panel, you can attach it to the 2-pin power LED header. Then the power LED will illuminate while
the system is powered on.
3-pin Power LED Header: PWRLED
These mainboards also provide a 3-pin power LED header. If there is a 3-pin power LED cord on your case
front panel, you can attach it to this 3-pin header instead of attach to the 2-pin one on the SW/LED
header.
Speaker Header: SPEAK
A speaker cable on your case front panel can be attached to this header. When you reboot the computer,
this speaker will issue a short audible (beep). If there are problems during the Power On Self-Test, the
system will issue an irregular pattern of audible beeps through this speaker.
Connectors
Floppy Disk Drive Connector: FLOPPY
These mainboards provide a standard floppy disk drive connector (FDD) that supports 360KB/ 720KB/
1.2MB/ 1.44MB/ 2.88 MB floppy disk drives using a FDD ribbon cable.
Pin Assignment Pin Assignment
1
PWR_LED (+)
2 Key
PWRLED
3
PWR_LED (-)
Pin Assignment Pin Assignment
1 SPK 2 N/C
SPEAK
3 Ground 4 VCC5