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Asus a8s-x 1-15 – Asus A8S-X User Manual

Page 25

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ASUS A8S-X

1-15

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).

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.

A8S-X

®

A8S-X USB device wake up

3

2

2

1

+5V

(Default)

+5VSB

USBPW56

USBPW78

3

2

2

1

+5V

(Default)

+5VSB

USBPW34

USBPW12