Asus P4-P5G41 - Manual (Page 34)

3-4 Chapter 3: Motherboard info
2. USB device wake-up (3-pin USBPW1-4, USBPW56)
Set these jumpers to +5V to wake up the computer from S1 sleep mode
(CPU stopped, DRAM refreshed, system running in low power mode) using
the connected USB devices. Set these jumpers to +5VSB to wake up from
S3 and S4 sleep modes (no power to CPU, DRAM in slow refresh, power
supply in reduced power mode).
• The USB device wake-up feature requires a power supply that can
provide 500mA on the +5VSB lead for each USB port. Otherwise,
the system would not power up.
• The total current consumed must NOT exceed the power supply
capability (+5VSB) whether under normal condition or in sleep mode.
P5Q8L
P5Q8L USB Device Wake Up
2
1 2
3
+5V +5VSB
USBPW1-4
2
1 2
3
+5V
(Default)
+5VSB
USBPW56
(Default)
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 by pressing
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.
P5Q8L
P5Q8L Keyboard Power Setting
2 1 2 3
+5V
(Default)
+5VSB
KBPWR