Asus P5P800-VM Manual page 37

3. Keyboard power (3-pin KBPWR)
This jumper allows you to enable or disable the keyboard wake-up
feature. Set this jumper to pins -3 (+5VSB) to wake up the computer
when you press a key on the keyboard (the default is the Space Bar).
This feature requires an ATX power supply that can supply at least 1A
on the +5VSB lead, and a corresponding setting in the BIOS.
KBPWR
1 2 2 3
+5V +5VSB
(Default)
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P5P800-VM Keyboard power setting
ASUS P5P800-VM 1-5