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Serial (COM) Ports
COM 2
COM 1
COM 4
9
COM 3
The system board is equipped with 3 onboard serial ports (COM 1, COM 2 and
COM 4). It is also equipped with a 9-pin connector for connecting an external se-
rial port (COM 3).
The serial ports are RS-232 asynchronous communication ports with 16C550A-
compatible UARTs that can be used with modems, serial printers, remote display
terminals, and other serial devices. To connect COM 3, please refer to the follow-
ing description. The serial port may be mounted on a card-edge bracket. Install
the card-edge bracket to an available slot at the rear of the system chassis then
insert the cable connector to the 9-pin connector. Make sure the colored stripe on
the ribbon cable is aligned with pin 1 of the connector.
1
2
Hardware Installation
2
19
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