Com (Serial) Ports - DFI SU173 User Manual

COM (Serial) Ports

2
1
COM 1/COM 2:
RS232/422/485
COM 3 and COM 4 are fixed at RS232.
The pin functions of COM 1 and COM 2 will vary according to BIOS' setting. JP4 (for COM1)
and JP5 (for COM 2) are designed to configure Serial COM ports to pure RS232 or RS232 with
power. Refer to "COM 1/COM 2 RS232/Power Select" in this chapter for more information.
The serial ports are asynchronous communication ports with 16C550A-compatible UARTs that
can be used with modems, serial printers, remote display terminals, and other serial devices.
Connecting External Serial Ports
Your COM port may come 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 serial port cable to the COM
connector. Make sure the colored stripe on the ribbon cable is aligned with pin 1 of the COM
connector.
Chapter 2 Hardware Installation
COM 3/COM 4:
RS232
2
1 9
COM 1 COM 4
9
COM 2 COM 3
Chapter 2
2
1 9
RS232
BIOS Setting
Configure the serial COM ports in the Advanced menu ("SIO NUVOTON6106D" submenu) of
the BIOS. Refer to the chapter 3 for more information.
22
COM 1/COM 2
2 2
1 9 1 9
RS422
RS485
Full Duplex
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