Asus P7P55 LX JOOYON SI User Manual page 33

2. Keyboard power (3-pin KBPWR)
This jumper allows you to enable or disable the keyboard wake-up feature. When you
set this jumper to pins 2–3 (+5VSB), you can wake up the computer by pressing a key
on the keyboard (the default is the Space Bar). This feature requires an ATX power
supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in
the BIOS.
P7P55 LX
P7P55 LX Keyboard Power Setting
3. USB device wake-up (3-pin USBPW1-8, 3-pin USBPW9-14)
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).
P7P55 LX
P7P55 LX 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.
ASUS P7P55 LX
USBPW1-8
+5VSB
+5V
(Default)
USBPW9-14
1 2 2 3
+5VSB
+5V
(Default)
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