Asus P4SE User Manual page 21

2. CPU Frequency Selection (DSW1 Switches 1-5)
This option tells the clock generator what frequency to send the CPU.
This permits selection of the CPU's external frequency (or Bus
Clock). The BUS Clock multiplied by the Frequency Multiple equals
the CPU's internal frequency (the advertised CPU speed).
To select the CPU external frequency using the DIP switches, ensure
that the JEN jumper is set to jumper mode.
P4SE
®
P4SE CPU
External Frequency Selection
Set the CPU frequency only to the recommended settings.
Frequencies other than the recommended CPU bus frequencies are
not guaranteed to be stable.
3. Keyboard Power (3-pin KBPWR1)
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).
P4SE
®
P4SE Keyboard Power Setting
ASUS P4SE Motherboard
DSW1
CPU 100MHz
DRAM 100MHz
CPU 105MHz 108MHz
DRAM 140MHz 144MHz
KBPWR1
2
1
+5V
100MHz 100MHz 100MHz
133MHz 150MHz 160MHz
112MHz 133MHz 133MHz
149MHz 133MHz 166MHz
3
2
+5VSB
(Default)
100MHz
166MHz
100MHz
200MHz
1-11