Jumpers And Connectors - Aaeon PCM-6890 User Manual

Jumpers
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.

J u m p e r s
Label
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
SW1 (4~6)
SW1 (2~3)
10 PCM-6890 User Manual
and connectors
Function
Clear CMOS
System temperature thermal sensor
COM4 RI pin voltage select
COM3 RI pin voltage select
Audio output select
ATX soft-power switch connector
COM2 RS-232/422/485 select
LCD clock select
LCD driving voltage select
COM2 RS-232/422/485 select
CPU frequency ratio
DOC address select