IEI Integration AFL-4 series-N270 v1.05 - Manual (Page 51)

AFL-4 Series-N270 User Manual
Page 51
4.9 Jumper Settings
NOTE:
A jumper is a metal bridge used to close an
electrical circuit. It consists of two or three metal
pins and a small metal clip (often protected by a
plastic cover) that slides over the pins to connect
them. To CLOSE/SHORT a jumper means
connecting the pins of the jumper with the plastic
clip and to OPEN a jumper means removing the
plastic clip from a jumper.
The following jumpers can be found on the motherboard installed in the AFL-4
Series-N270. Before the AFL-4 Series-N270 is installed, the jumpers must be set in
accordance with the desired configuration. The jumpers on the AFL-4 Series-N270
motherboard are listed in Table 4-1.
Description Label Type
Clear CMOS J_COMS1 2-pin header
COM3 RX RS-232/422/485 select JP9 8-pin header
COM3 TX RS-422/485 select JP11 6-pin header
COM3 RS-232/422/485 select JP6 12-pin header
Table 4-1: Jumpers
4.9.1 Access the Jumpers
To access the jumpers, remove the back panel. To remove the back panel, please refer to
Section 4.7 Step 1 ~ Step 4 .
4.9.2 Preconfigured Jumpers
WARNING: