beautypg.com

Asus P5B SE User Manual

Page 43

background image

ASUS P5B SE

2-23

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.

2. USB device wake-up (3-pin USBPW1-4, USBPW5-8, USBPW910)

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).

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.

P5B SE

®

3

2

2

1

P5B SE USB device wake-up

USBPW910

USBPW5-8

USBPW1-4

+5V

(Default)

+5VSB

+5V

(Default)

+5VSB

3

2

2

1

P5B SE

®

+5VSB

2 3

+5V

(Default)

1 2

P5B SE Keyboard power setting

KBPWR