Dell OptiPlex Gxi - Manual (Page 40)

Jumpers
= jumpered
= unjumpered
*One set of the speed jumper pins must have a jumper plug installed; otherwise, the system operates at an undetermined speed.
BIOS (default) Reserved. Do not change.
NICRST (default) Reserved. Do not change.
PSWD (default) The password features are enabled.
The password features are disabled.
100 Reserved. Do not change.
133* Jumpered when the processor's internal speed is 133 MHz.
166* Jumpered when the processor's internal speed is 166 MHz.
200* Jumpered when the processor's internal speed is 200 MHz.
233* Jumpered when the processor's internal speed is 233 MHz.
NOTE: When upgrading to a 233-MHz microprocessor, set the jumper to 100 MHz on system board part number 81004.