
COM (Serial) Ports
DCD-
TD
RD
DTR-
GND
1 2 3 4 5
RTS-
RI-
DSR-
CTS-
6 7 8 9
COM1isxedatRS232.
COM 2’s pin denition will vary according to JP9’s settings. Refer to “COM 2
RS232/RS422/RS485Select”inthischapterformoreinformation.
Theserialportsare asynchronous communicationportswith16C550A-compatible
UARTs that can be used with modems, serial printers, remote display terminals,
and other serial devices.
Connecting External Serial Ports
YourCOMportmaycomemountedonacard-edgebracket.Install the card-edge
bracketto an available slot at the rear of the system chassis then insert the se-
rial port cable to the COM connector. Make sure the colored stripe on the ribbon
cableisalignedwithpin1oftheCOMconnector.
BIOS Setting
Congure the serial ports in the Integrated Peripheralssubmenu (“Super IO De-
vice”section)oftheBIOS.Refertochapter3formoreinformation.
COM1
COM2
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