SBC comm AMD SBC-770 - Manual (Page 21)

10 SBC-770 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
J2 Clear CMOS
J4 LCD driving voltage select
J5 System temperature thermal sensor
J6 CPU frequency ratio select
J7 LCD clock signal select
J8 DOC address select
J9 COM2 RS-232/422/485 select
J10 COM2 RS-232/422/485 select