Asus P4VP-MX - Manual (Page 26)

1-16 Chapter 1: Product introduction
2. USB device wake-up (3-pin USBPWR12, USBPWR34, USBPWR56)
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 to +5VSB to wake up from S3 sleep mode (no
power to CPU, DRAM in slow refresh, power supply in reduced power mode).
The USBPWR56 jumpers are for the internal USB header that you can connect
to the front USB ports.
1. This feature requires a power supply that can provide at least 1A
on the +5VSB lead when these jumpers are set to +5VSB.
Otherwise, the system does not power up.
2. The total current consumed must NOT exceed the power supply
capability (+5VSB) whether under normal or in sleep mode.
P4VP-MX
®
P4VP-MX USB Device Wake Up
USBPWR56
+5VSB
3
2
1
2
+5V
+5VSB
3
2
1
2
+5V
USBPWR12
USBPWR34
(Default)
(Default)