Jumpers And Connectors - Aaeon PCM-4896 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.
J u m p e r s
Label
J 1
J4
J5
J6
J8
J9
J 1 0
J 1 1
J 1 2
J1 3
J 1 4
SW 1 ( 1 ~ 3)
SW1 (5, 6)
SW2 (1 )
10 PCM-4896 User Manual
Function
Internal buzzer select
Clear CMOS
ATX soft-power switch connector
Audio output select
LCD driving voltage select
LCD clock select
Reserve for future use (default: 2-3 close)
COM4 RI pin voltage select
COM3 RI pin voltage select
COM2 select
COM2 selection
CPU frequency ratio
DOC address select
CPU clock select