Asus P4P800-X User Manual page 26

2. USB device wake-up (3-pin USBPW12, USBPW34, USBPW56, USBPW78)
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 USBPWR12 and USBPWR34 jumpers are for the rear USB ports. The
USBPWR56 and USBPWR78 jumper is for the internal USB connectors that
you can connect to additional USB ports.
•
•
P4P800-X
P4P800-X USB device wake up
1-16
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.
®
USBPW12
USBPW34
3
2
2
1
+5V +5VSB
(Default)
USBPW56
USBPW78
1 2 2 3
+5V +5VSB
(Default)
Chapter 1: Product introduction