24
Built-in Ports
The C586HX system board is equipped with two serial ports, one paral-
lel printer port, one FDD connector, two IDE hard disk shrouded head-
ers, one PS/2 mouse connector and two USB connectors. Refer to page
12 for the locations of the built-in connectors and pin 1 of those connec-
tors.
Serial Ports
The built-in serial ports are RS-232C asynchronous communication
ports with 16C550A-compatible UARTs that can be used with modems,
serial printers, remote display terminals, and other serial devices. They
use the following system I/O addresses:
Port Configuration
Serial Port 1
Serial Port 2
COM1
3F8h*
3F8h
COM2
2F8h
2F8h*
COM3
3E8h
3E8h
COM4
2E8h
2E8h
* Default
Connecting the Serial Ports
Two serial port cables mounted on a card-edge bracket are provided
with the system board. Connect one serial port cable to connector J2
for COM 1 primary serial port and the other serial port cable to connec-
tor J3 for the COM 2 secondary serial port. Make sure the colored
stripes on the ribbon cables are aligned with pins 1 of connectors J2
and J3. Mount the card-edge bracket to the system chassis.
PS/2 Mouse Port
The PS/2 mouse port is a 6-pin connector on the system board. Attach
the 6-pin mouse port cable, which is mounted on a card-edge bracket,
to connector J1. Make sure the red wire on the PS/2 mouse connector
is aligned with pin 1 of connector J1. Mount the card-edge bracket to
the system chassis.
