3.USB device wake-up (3-pin USBPW12, USBPW34, USBPW56, USBPW78)

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 USBPW12 and USBPW34 jumpers are for the rear USB ports. The USBPW56 and USBPW78 jumpers are for the internal USB header that you can connect to the front USB ports.

 

 

USBPW12

 

 

 

USBPW34

 

 

1

2

2

3

 

+5V

+5VSB

 

(Default)

 

 

 

 

USBPW56

 

 

 

USBPW78

 

P4P800

1

2

2

3

 

 

 

 

P4P800 USB Device Wake Up

+5V

+5VSB

(Default)

 

 

1.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.

2.The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode.

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Chapter 2: Hardware information