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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 Enable.
P4B-LS Audio Codec Setting
Figure 2-25
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).
P4B-LS Keyboard Power Setting
Figure 2-26
2-20
®
P4B-LS
Audio CODEC Settings
®
P4B-LS
Keyboard Power Settings
AUD_EN1
1 2
2 3
Enable
Disable
(Default)
KBPWR
1 2
2 3
+5VSB
+5V
(Default)
Chapter 2: Hardware information
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