Asus P4S133 - Manual (Page 38)

26 Chapter 2: Hardware information
5) USB Device Wake-Up (3x3 pin USBV1, USBV2, USBV3)
The default setting, [1-2] (+5V) disables the USB wake-up feature.
Reset these jumpers to pins [2-3] (+5VSB) to wake up the computer
using USB devices.
The USB device wake-up feature requires a power supply that can
provide at least 1A on the +5VSB lead. If this requirement is not met,
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.
P4S133
®
P4S133 USB Device Wake Up
USBV1
USBV2
+5V
1 2
+5VSB
2 3
(Default)
+5VSB
2
3
+5V
1
2
(Default)
USBV3