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

J1

Clear CMOS

 

 

J2

System temperature thermal sensor

 

 

J3

COM4 RI pin voltage select

 

 

J4

COM3 RI pin voltage select

 

 

J5

Audio output select

 

 

J6

ATX soft-power switch connector

 

 

J7

COM2 RS-232/422/485 select

J8

LCD clock select

 

 

J9

LCD driving voltage select

 

 

J10

COM2 RS-232/422/485 select

 

 

SW1 (2~3)

DOC address select

 

 

JP1

Mic_Amp

 

 

10 PCM-6890B User Manual

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Image 20
IBM PCM-6890B, All-in-One FC/Socket 370 Celeron manual Jumpers and connectors, Label Function