Aaeon MB-562 Manual page 32

The COM4 can be configured to operate in RS-232, RS-422, or RS-485
mode. The operation mode can be set via (JP11).
1
3
JP11
5
* Default
You can connect an LED to indicate that an IDE device is in use.The
pin assignments for this jumper are as follows:
Pin Function
1 -R/W IDE
2 Pull high
24 MB-562 User's Manual
*RS-232
2 1
4 3
6 5
RS-422
2
4
6
RS-485
1 2
3 4
5 6