Asus P4B-FX - Manual (Page 38)

2-18 Chapter 2: Hardware information
2. Keyboard power (3-pin KB_PWR)
This jumper allows you to enable or disable the keyboard wake-up
feature. Set this jumper to pins 1-2 if you wish to wake up the computer
when you press a key on the keyboard (the default is the Space Bar).
Set this jumper to pins 2-3 to disable this feature. This jumper is set to
pins 2-3 (Disabled) by default.
Figure 2-21 Keyboard Power Settings
The keyboard wake-up feature requires a power supply that can
provide at least 1A on the +5VSB lead. If this requirement is not met,
the system does not power up. The total current consumed must NOT
exceed the power supply capability (+5VSB) whether under normal
condition or in sleep mode.
3. Audio CODEC (3-pin 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 into one of the PCI slots. The default setting is Enabled.
Figure 2-22 Audio CODEC Settings
P4B-FX
P4B-FX Audio Setting
AUD_EN1
2 3 1 2
Enabled Disabled
(Default)
P4B-FX
P4B-FX Keyboard Power Up
KB_PWR
1
2 2
3
Enabled Disabled
(Default)