Asus A8S-X - Manual (Page 25)

ASUS A8S-X 1-15
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 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.
A8S-X
®
A8S-X USB device wake up
3 2 2 1
+5V
(Default)
+5VSB
USBPW56
USBPW78
3 2 2 1
+5V
(Default)
+5VSB
USBPW34
USBPW12