4.Audio controller (AUD_EN1) (on audio models only)

This jumper allows you to enable or disable the audio CODEC on the motherboard. Disable the audio CODEC if you desire to install a PCI audio card on one of the PCI slots or on the CNR slot. The default setting is Enabled.

AUD_EN1

P4B

1

2

2

3

Enable Disable (Default)

P4B Audio Codec Setting

Figure 2-25 Audio CODEC Settings

5.Keyboard power (KBPWR)

This jumper allows you to enable or disable the keyboard wake-up feature. Set this jumper to pins 1-2 (+5VSB) if you wish to wake up the computer when you press a key on the keyboard (the default is the Space Bar). This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS (see section 4.5.1 Power Up Control). The default is setting is on pins 1-2 (+5VSB).

P4BKBPWR

1

2

2

3

 

 

 

 

 

+5VSB+5V

P4B Keyboard Power Setting (Default)

Figure 2-26 Keyboard Power Settings

2-20

Chapter 2: Hardware information