Asus P4P800 SE - Manual (Page 44)

2-22 Chapter 2: Hardware information
3. Keyboard power (3-pin KBPWR)
This jumper allows you to enable or disable the keyboard wake-up
feature. Set this jumper to pins 2-3 (+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).
P4P800 SE
®
P4P800 SE Keyboard Power Setting
(Default)
+5V +5VSB
KBPWR
2 3 1 2
P4P800 SE
®
P4P800 SE SMB2.0 Support
SMB20
Disable Enable
(Default)
3 2 2 1
4. SMB2.0 (two 3-pin SMB20)
These jumpers allow you to enable or disable the SMBus 2.0 feature
supported on the motherboard. By default, these jumpers are set to
pins 2-3 to disable the feature. If you wish to install PCI devices that
comply with SMBus 2.0 specification, move the jumper caps to pins
1-2 to enable the SMBus 2.0 feature.