Asus P4P800S-X User's Guide download pdf (Page 26)

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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).

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

USBPWR56 and USBPWR78 jumper is for the internal USB connectors that

you can connect to additional USB ports.

• 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.

P4P800-X

P4P800-X USB device wake up

+5V

(Default)

+5VSB

USBPW56

USBPW78

+5V

(Default)

+5VSB

USBPW12

USBPW34

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Asus P4P800S-X User's Guide Page 26