DFI G486VPA, User Manual, Page: 27 / 132

G486VPA
Jumpers JP11 and JP13
CPU External Clock Speed for PCI Slots
These jumpers should be configured according to the
type of CPU installed on the system board. Set Jumpers
JP11 and JP13 pins 2 and 3 to On if the CPU external
clock speed is greater than 33MHz. If the CPU external
clock speed is less than or equal to 33MHz, set Jumpers
JP11 and JP13 pins 1 and 2 to On.
Installation Overview
u
2-17
CPU External Clock
Speed >33MHz
CPU External Clock
Speed <= 33MHz *
* Default setting
2-3 On
1-2 On
JP13
2-3 On
1-2 On
JP11
3 2 1 3 2 1
JP11, JP13 pins 2-3 On:
CPU External Clock
Speed > 33MHz
JP11, JP13 pins 1-2 On:
CPU External Clock Speed
<= 33MHz (Default)
Set Jumpers JP11 and JP13 pins 2-3 to On if your
G486VPA system board uses one of the following
CPUs: 486DX-50, 486DX2-80, 486DX-40 or
486SX-40. The CPU external clock speed supported
by each of them is greater than 33MHz.