ASUS K8V-F motherboard user guide
1-15
3. 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.
K8V-F
®
K8V-F Keyboard Power Setting
(Default)
+5V
+5VSB
KBPWR
2 3
1 2
K8V-F
®
3
2
2
1
3
2
2
1
K8V-F USB Device Wake Up
+5V
(Default)
+5VSB
USBPWR56
USBPWR78
+5V
(Default)
+5VSB
USBPWR12
USBPWR34
•
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.
