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

M2N4-SLI

USBPW12

 

3

2

2

1

 

+5V

+5VSB

(Default)

 

USBPW56USBPW78USBPW910

1

2

 

2

3

 

 

 

 

 

USBPW34

1

2

2

3

+5V

+5VSB

(Default)

 

 

M2N4-SLI 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.

2-20

Chapter 2: Hardware information