Dell OptiPlex GX1p User Manual page 21

Jumpers: Dell™ OptiPlex™ GX1p
= jumpered
= unjumpered
500MHZ
450MHZ 1
400MHZ 1
350MHZ
333MHZ
300MHZ
2
266MHZ
BUS66M
(default)
BIOS
(default)
PSWD
(default)
1 Either the 450 MHz or 400 MHz speed jumper pins must have a jumper plug installed.
2 As of April 19, 1999, the processor speed jumper was set at 266 MHz on Dell OptiPlex system boards shipped from the factory.
Reserved for future options.
Jumpered when the microprocessor's internal speed is 450 MHz (see footnote 1).
Jumpered when the microprocessor's internal speed is 400 MHz (see footnote 1).
Not supported on the GX1p.
Not supported on the GX1p.
Not supported on the GX1p.
Jumpered for 266 MHz (see footnote 2).
External system clock speed is 66 MHz when jumpered.
External system clock speed operates at 100 MHz when not jumpered.
Reserved. Do not change.
The password features are enabled.
The password features are disabled.