Asus K8N-VM - Manual (Page 28)

1-18 Chapter 1: Product introduction
3. Keyboard power (3-pin KBPWR)
This jumper allows you to enable or disable the keyboard wake-up
feature. Set this jumper to pins 2-3 (+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
500 mA on the +5VSB lead, and a corresponding setting in the BIOS.
K8N-VM Keyboard Power Setting
(Default)
+5V +5VSB
KBPWR
2 3 1 2
R
K8N-VM