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Chapter 5 Ports and Connectors
Chapter 5
COM (Serial) Ports
COM 5
COM 6
COM 3
COM 4
COM 3 to COM 6:
RS232
2
1
9
RXD
DCD- TXD
D
TR
-
GND
DSR
-
RT
S-
CTS-
RI
-
COM 3 to COM 6 are fixed at RS232.
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.
• BIOS
Setting
Configure the serial ports in the Advanced menu (“Super IO Configuration” submenu) of the
BIOS. Refer to chapter 7 for more information.
Rear Panel I/O Ports
DC-in
USB 3.0
COM 1
USB 2.0
LAN 1
LAN 2 VGA
COM 2
The rear panel I/O ports consist of the following:
• 2 RJ45 LAN ports
• 1 VGA port
• 2 Type A USB 3.0 ports
• 2 Type A USB 2.0 ports
• 2 RS232/422/485 serial COM ports
• 1 9~36V DC-in