2 . USB device wake-up (3-pin USBPWR12, USBPWR34)

The USBPWR12 and USBPWR34 jumpers are for the rear USB ports. 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).

USBPW12

USBPW34

1

2

 

2

3

 

 

 

 

 

+5V +5VSB (Default)

®

USB device wake up

¥ The USB device wake-up feature requires a power supply that can provide 500 mA 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 . 1394 setting (3-pin 1394SEL)

Keep the default setting (1-2) to enable support for IEEE 1394a devices. To disable, move the jumper caps to pins 2-3.

 

 

1394SEL

 

 

2

1

3

2

®

 

 

 

 

1394 setting

Enable

Disable

(Default)

 

 

4 - 4

Chapter 4: Motherboard info