2.USB device wake-up (3-pin USBPW12, USBPW34)

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).

 

1

2

2

3

 

USBPW12

 

 

 

 

+5V

+5VSB

 

(Default)

 

 

P5K18L

1

2

2

3

 

 

USBPW34

 

 

 

P5K18L USB device Wake up

+5V

+5VSB

(Default)

 

 

•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.

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.

 

KBPWR

 

1

2

2

3

P5K18L

+5V

+5VSB

(Default)

 

 

P5K18L Keyboard Power Setting

4-

Chapter 4: Motherboard Info