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10 SBC-658 User Manual
Jumpers and connectors
Connectors on the board link it to external devices such as hard
disk drives, a keyboard, or floppy drives. In addition, the board
has a number of jumpers that allow you to configure your system
to suit your application.
The following tables list the function of each of the board's
jumpers and connectors.
Jumpers
Label Function
SW1 (S5, S6) DOC address select
J1 LCD clock signal & driving voltage select
J2 COM2 RS-232/422/485 select
J3 COM2 RS-232/422/485 select
J4 Clear CMOS Connectors