Jumpers And Connectors - Advantech AIMB-231 User Manual

1.4

Jumpers and Connectors

Connectors on the AIMB-231 motherboard link it to devices such as hard disk drives
and a keyboard. In addition, the board has a number of jumpers used to configure
your system for your application.
The tables below list the function of each of the board jumpers and connectors. Later
sections in this chapter give instructions on setting jumpers. Chapter 2 gives instruc-
tions for connecting external devices to your motherboard.
Table 1.1: Jumpers
Label
JFP1
JFP2
JFP3
CMOS1
PSON1
JWDT1+JOBS1
JLVDS1
VCON1
JVBR1
JCOM1
JSETCOM1
COM1_S1~S4
JCPUFAN1, JSYSFAN1 FAN control by DC or PWM mode selection (Default 2-3)
AIMB-231 User Manual
Function
Power switch/Reset switch
HDD LED/SMBus/Speaker
Power LED / Keyboard lock
CMOS clear (Default 1-2)
AT(1-2) / ATX(2-3) (Default 2-3)
Watchdog Reset and OBS Alarm
Voltage 0 V/3.3 V/5 V/12 V selector for LVDS1 connector
(Default 4-6, 3.3 V)
Panel selection (Default 1, 3.3 V)
Brightness control selector for Analog or Digital
(Default 1-2, Linear)
COM1 5V/12V selector (Default 1-2, RI)
RS232/RS485/RS422 selector (Default 5-6,7-9,8-10,13-15,14-16)
RS422/485 master or slave selection (Default 1-2 Slave)
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