ASUS M5A78L-M LX3 PLUS Manual Do Utilizador

Keyboard power (3-pin KBPWR)
This jumper allows you to enable or disable the keyboard wake-up feature. When you 

set this jumper to pins 2–3 (+5VSB), you can wake up the computer by pressing a key 

on the keyboard. This feature requires an ATX power supply that can supply at least 1A 

on the +5VSB lead, and a corresponding setting in the BIOS.

USB device wake-up (3-pin USBPW1-4, 3-pin USBPW5-8)
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.

2
1

2

3

+5V

(Default)

+5VSB

KBPWR

2

1

2 3

+5V

(Default)

+5VSB

USBPW5-8

2
1

2

3

+5V

+5VSB

(Default)

USBPW1-4

Chapter 1: Product introduction

1-18