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Asus A8S-X User Manual

Page 32

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1-20

Chapter 1: Product introduction

2. 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).

A8S-X SE

®

A8S-X SE USB Device Wake Up

3

2

2

1

+5V

(Default)

+5VSB

USBPW56

USBPW78

3

2

2

1

+5V

(Default)

+5VSB

USBPW34

USBPW12

• 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.