3.CPU frequency selection (DSWF 1-5)

This option tells the clock generator what frequency to send the CPU. This allows the 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.

DSWF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

5

 

 

 

 

 

5

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

4

 

 

 

 

 

4

 

 

 

 

 

4

 

 

 

3

 

 

 

 

3

 

 

 

 

 

3

 

 

 

 

 

3

 

ON

 

 

1 2

 

ON

 

 

1 2

 

ON

 

 

 

1 2

 

ON

 

 

 

1 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU 100MHz 105MHz 111MHz 120MHz

AGP 67MHz 70MHz 74MHz 80MHz

PCI 33MHz 35MHz 37MHz 40MHz

P4B266-E

P4B266-E CPU

External Frequency Selection

 

 

 

5

 

 

 

5

 

 

 

 

5

 

 

 

 

 

 

4

 

 

 

 

4

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

3

 

 

 

3

 

 

 

 

 

 

 

ON

 

 

1 2

 

ON

 

1 2

 

ON

 

 

1 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU 120MHz 125MHz 133MHz AGP 60MHz 62MHz 66MHz PCI 30MHz 31MHz 33MHz

Set the CPU frequency only to the recommended settings. Frequencies other than the recommended CPU bus frequencies are not guaranteed to be stable.

4.RAID setting (3-pin RAID_SW) (on RAID models only)

This jumper allows you to enable or disable the onboard ATAIDE1 and ATAIDE2 connectors. Keep the default setting (pins 1-2) if you wish to use RAID configuration. Set to pins 2-3 to disable the connectors.

 

 

RAID_SW

 

 

1

2

2

3

P4B266-E

Enable

Disable

 

Onboard RAID

 

 

 

(Default)

 

 

P4B266-E RAID IDE Setting

ASUS P4B266-E motherboard user guide

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