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ASUS P4SDX motherboard user guide
1-15
1.11 Jumpers
1. USB device wake-up (3-pin USBPWR12, USBPWR34, USBPWR56)
Set this jumper 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 rear panel USB ports (Ports 1 to 4) do not support device wake-up from S4
sleep mode.
2. Keyboard power (3-pin KBPWR)
This jumper allows you to enable or disable the keyboard wake-up feature. Set
this jumper to pins 2-3 (+5VSB) if you wish to wake up the computer when you
press a key on the keyboard (the default value is [Enabled]). This feature
requires an ATX power supply that can supply at least 1A on the +5VSB lead
and a corresponding setting in the BIOS. (see section 2.5.1 Power Up Control)
2312
P4SDX
®
P4SDX USB Device Wake Up
(Default)
+5V +5VSB
USBPWR56
(Default)
+5V +5VSB
USBPWR12
2312
USBPWR34
2312
P4SDX
®
P4SDX Keyboard Power Setting
(Defaul
t)
+5V +5VSB
KBPWR