Asus A8S-X User Manual page 32

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).
A8S-X SE
A8S-X SE USB Device Wake Up
• 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.
1-20
1 2
+5V
(Default)
1 2
®
+5V
(Default)
USBPW12
USBPW34
2 3
+5VSB
USBPW78
USBPW56
2
3
+5VSB
Chapter 1: Product introduction