DFI LR102-B18D/B18S - Manual (Page 33)

33
2
Hardware Installation
COM1 and COM2 Port
COM1
COM 1 and COM 2
DCD- TD RD D
TR
-
GND
1 2 3 4 5
R
T
S-
RI
-
DSR
-
CT
S-
6 7 8 9
COM1 and COM2 are fixed at RS232.
COM 4
COM1 and COM2’s pin definition will vary according to JP3 and JP4’s settings.
Refer to “COM1 and COM2 RS232/RS422/RS485 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 se-
rial port cable to a COM connector. Make sure the colored stripe on the ribbon
cable is aligned with pin 1 of the COM connector.
BIOS Setting
Configure the serial ports in the Advanced menu of the BIOS. Refer to chapter 3
for more information.
1 9
2
DCD-
TD
GND R
T
S-
RI
-
RD D
TR
-
DSR
-
CT
S-
COM2