User`s manual

INSTALLATION
9
Setting the Jumpers
Jumpers are used to select various settings and features according to
your needs and applications. Contact your supplier if you have doubts
about the best configuration for your needs. The following lists the
connectors and their respective functions.
Jumper Locations .........................................................................10
Configuring the CPU Frequency..................................................11
JP1, JP2, JP3: RS232/422/485 (COM2) Selection.....................11
JP4: Realtek RTL8139C LAN Enable/Disable...........................11
JP6: Clear CMOS Contents..........................................................12
JP7: DiskOnChip Address Select.................................................12
J19, J20, J21, J22, J23: CRT VGA Signal Select .......................12