Keyboard & Ps/2 Mouse (Cn14); Reset Switch (J14); Hard Drive Led (Cn6); Serial Ports - Advantech PCA-6151 Manual

Keyboard & PS/2 mouse connectors (CN14)
The PCA-6151 board provides a keyboard connector. A 6-pin
mini-DIN connector (CN14) on the card mounting bracket
supports single-board computer applications. The card comes with
an adapter to convert from the 6-pin mini-DIN connector to a
standard DIN connector and to a PS/2 mouse connector.

Reset switch (J14)

You can connect an external switch to easily reset your computer.
This switch restarts your computer as if you had turned off the
power, then turned it back on. Install the switch so that it closes
the two pins of J14.
Hard disk drive LED (CN6)
You can connect a LED to connector CN6 to indicate when the
HDD is active. Marks on the circuit board indicate LED polarity.

Serial Ports

The PCA-6151 offers two serial ports: COM1 in RS-232, COM2
in RS-232/422/485. These ports let you connect to serial devices (a
mouse, printers, etc.) or a communication network.
You can select the address for each port ( For example,3F8H
[COM1], 2F8H [COM2]) or disable it, using the BIOS Advanced
Setup program, covered in Chapter 3.
The card mounting bracket holds the serial port connector for the
one port, and the parallel port and serial port adapter kit (supplied
with the card) holds the connector for the other port. This lets you
connect and disconnect cables after you install the card. The DB-9
connector on the bottom of the bracket is the first RS-232 port,
COM1. The DB-9 connector on the adapter kit is the second serial
port, COM2.
Chapter 2 Connecting Peripherals 17