Asus P4SGL-MX - Manual (Page 21)

ASUS P4SGL-MX Motherboard 1-11
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). Both jumpers are set to pins 1-2 (+5V) by default because not all
computers have the appropriate power supply to support this feature.
The USBPWR12 jumper is for the rear USB port. USBPWR34 and
USBPWR56 is for the internal USB header that you can connect to the front
USB ports.
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.
The total current consumed must NOT exceed the power supply
capability (+5VSB) whether under normal condition or in sleep mode.
P4SGL-MX
®
P4SGL-MX USB Device Wake Up
USBPWR_12
+5VSB
3
2
+5V
(Default)
1
2
+5V
(Default)
1 2
+5VSB
3 2
USBPWR_56
USBPWR_34