Jumpers And Connectors; Lcd Clock Signal & Driving Voltage Select (J2); Clear Cmos (J3); Com2 Rs-232/422/485 Select (J4, J5) - Aaeon SBC-656 User Manual

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.

Label
SW1 (B, C)
SW1 (D, E, F)
J2
J3
J4
J5
10 SBC-656 User Manual
Function
DOC address select
CPU frequency ratio select
LCD clock signal & driving voltage select
Clear CMOS
COM2 RS-232/422/485 select
COM2 RS-232/422/485 select