Mainboard P4M900
11
Front Panel Headers: JW_FP, PWRLED, SPEAK
JW_FP
Pin
Assignment
Function
Pin
Assignment
Function
1
VCC5 (+)
2
VCC5 (+)
3 HDDLE
(-)
Hard Drive LED
(HDLED)
4 PWRLED
(-)
2-pin Power LED
(PWR LED)
5 GND
6 PWRBTN
7 RSTSW
8 GND
Power-on Button
(PWRBTN)
9 N/C
Reset Switch
(RESET)
10 Key
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.
Pin
Assignment
Pin
Assignment
1
PWR_LED (+)
2 Key
PWRLED
3
PWR_LED (-)
