Asus P5B-PLUS User Manual page 49

2. USB device wake-up (3-pin USBPW1-4, 3-pin USBPW5-8)
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 S4 sleep mode (no
power to CPU, DRAM in slow refresh, power supply in reduced power mode).
P5B-PLUS 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 will not power up.
• If you are using Windows
up the system from S4 sleep mode.
• The total current consumed must NOT exceed the power supply capability
(+5VSB) whether under normal condition or in sleep mode.
3. 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) to wake up the computer when you press
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.
P5B-PLUS Keyboard power setting
ASUS P5B-Plus Series
USBPW1-4
3
2 2
1
+5V +5VSB
(Default)
USBPW5-8
1 2 2 3
+5V +5VSB
(Default)
®
2000, you need to install Service Pack 4 to wake
KBPWR
1 2 2 3
+5V +5VSB
(Default)
2-23