Asus K8V - Manual (Page 47)

ASUS K8V Deluxe motherboard user guide 2-21
2. USB device wake-up (3-pin USBPWR12, USBPWR34, USBPWR56,
USBPWR78)
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 sleep mode (no power to CPU, DRAM in slow refresh, power
supply in reduced power mode). All jumpers are set to pins 1-2 (+5V)
by default because not all computers have the appropriate power
supply to support this feature.
The USBPWR12 and USBPWR34 jumpers are for the rear USB ports.
The USBPWR56 and USBPWR78 jumpers are for the internal USB
header that you can connect to the front USB ports.
• 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.
K8V
®
+5V
(Default)
+5VSB
USBPWR34
3 2 2 1
+5V
(Default)
+5VSB
K8V USB Device Wake Up
USBPWR12
3 2 2 1
+5V
(Default)
+5VSB
USBPWR56
USBPWR78
1
2
3
2