Chapter 1: product introduction, H81m-a usb device wake up – Asus H81M-E User Manual

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Chapter 1: Product introduction

H81M-A

1

2

2

3

+5V

+5VSB

(Default)

KB_USBPWB

H81M-A Keyboard and USB device wake up

H81M-A

2

1

2 3

+5V

(Default)

+5VSB

USBPWF

H81M-A USB Device Wake Up

3.

USB device wake-up (3-pin USBPWF)
Set this jumper 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).

2.

Keyboard & USB device wake-up (3-pin KB_USBPWB)
Set this jumper 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 conditions or in sleep mode.

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