User Guide

3-26 AcerAltos 19000Pro4 System Guide
CPU Frequency Jumper
Table 3-4 lists the CPU frequency ratios depending on JP3 settings.
Table 3-4 CPU Frequency Ratios (JP3)
JP3 Settings
1-2 3-4 5-6 7-8
Core/Bus
C C C C 2
C C O C 3
C C C O 4
C C O O 5
O C C C 2.5
O C O C 3.5
C = Closed (Processor pin connected to Vss)
O = Open
DO NOT change jp3 settings unless you are
qualified to do so. Ask a technician if you
need help when configuring the jumper.