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2.1
Jumpers
2.1.1
Jumper Description
Cards can configured by setting jumpers. A jumper is a metal bridge used to close an
electric circuit. It consists of two metal pins and a small metal clip (often protected by
a plastic cover) that slides over the pins to connect them. To close a jumper, connect
the pins with the clip. To open a jumper, remove the clip. Certain jumpers have three
pins, which are labeled 1, 2, and 3. In such cases, connect either Pins 1 and 2, or
Pins 2 and 3.
The jumper settings are schematically depicted below.
A pair of needle-nose pliers may be necessary when working with jumpers. For
advice regarding the optimum hardware configuration for your application, contact
your local distributor or sales representative before making any changes.
Generally, only a standard cable is required to make most connections.
Warning! To avoid damaging the computer, always turn the power supply off
before setting jumpers.
2.1.2
Jumper List
Table 2.1: Jumper List
J1
J2
J3
J4
J5
RSB-4220 User Manual
Boot device (SW9)
LVDS power (CN29)
Backlight power (CN30)
USB host/OTG (CN25)
UART1 RS232, RS422, RS485 select (SW8)
6
1
2
3
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