2.Keyboard and Mouse wake-up (KBMSPWR)

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 keyboard or mouse. 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).

AM1I-A

KBMSPWR

1

2

2

3

 

 

 

 

 

+5V +5VSB (Default)

AM1I-AKeyboard & Mouse wakeup

The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode.

3.USB device wake-up (USBRPWR, USBPWR5~8)

These jumpers allow you to enable or disable the USB device 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 USB keyboard or by clicking on the USB mouse. This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS.

USBRPWR

1

2

2

3

 

 

 

 

 

AM1I-A

+5V +5VSB (Default)

USBPW5-8

1

2

2

3

 

 

 

 

 

+5V +5VSB (Default)

AM1I-A USB device wakeup

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.

1-12

Chapter 1: Product introduction