Asus T3-PH1 - Manual (Page 44)

4-4 Chapter 4: Motherboard Info
2. USB device wake-up (3-pin USBPW12, USBPW34,
USBPW910)
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 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.
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 1A
on the +5VSB lead, and a corresponding setting in the BIOS.
USB device Wake up
R
USBPW12
USBPW34
1 2
+5V
(Default) +5VSB
3 2
3 2 2 1
+5V +5VSB
USBPW910
(Default)
R
Keyboard Power Setting
(Default)
+5V +5VSB
KBPWR
2 3 1 2