User`s manual

AIMB-740-B/741-B User’s Manual 22
using other IRQs may cause unexpected resource conflict. If you want to
disable the ports or change the parameters, you can do this in the system
BIOS setup.
Different devices implement the RS-232/422/485 standards in different
ways. If you are having problems with a serial device, be sure to check
the pin assignments for the connector.
2.8 PS/2 Keyboard and Mouse connector (CN11)
Two 6-pin mini-DIN connectors (CN11) on the motherboard provide
connection to a PS/2 keyboard and a PS/2 mouse, respectively.