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22
Hardware Installation
2.7
Ports and Connectors
2.7.1 Serial Ports
The built-in serial ports are
RS-232C asynchronous
communication por ts with
16C550A-compatible UARTs
that can be used with
modems, serial pr inter s,
remote display terminals, and
other serial devices. You can
set the ser ial por ts’ I/O
address in the Integrated Pe-
ripherals submenu of the
BIOS.
The system board is
equipped with two I/O chips
that support 4 COM ports. The onboard serial port (CN1 - Teal/
Turquoise) for COM 1 primary serial port is located at the ATX
double deck ports of the board.
The 9-pin connector (COM 2) is for secondary serial port. One
optional card-edge bracket mounted with a serial port cable may be
provided with the system board. If you want to use the secondary
serial port, connect the serial port cable to COM 2. Make sure the
colored stripe on the ribbon cable is aligned with pin 1 of COM 2.
Mount the card-edge bracket to the system chassis.
COM 3 and COM 4, which are located next to DIMM 2, are
connectors for touchscreens.
