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Compaq Presario 4400 Series

4400 board diagram


JumperFunctionPinsFunction
P7Replacement Battery Connector  
P8Processor Select1-2
2-3
3-4
4-5
50MHz Clock Speed
60MHz Clock Speed
66MHz Clock Speed
55MHz CPU External Bus Frequency
P9Processor SelectA1-A2
B1-B2
A2-A3
B1-B2
A2-A3
B2-B3
A1-A2
B2-B3
1.5X Clock Multiplier

2.0X Clock Multiplier

2.5X Clock Multiplier

3.0X Clock Multiplier
P11CMOS Erase/Password Clear1-2
Open
Secure CMOS Power
Remove Jumper for 10 sec, reinstall to clear