Aaeon SBC-590 User Manual page 37

The parallel port is normally used to connect the CPU card to a
printer. The SBC-590 includes an on-board parallel port, accessed
through CN14, a 26-pin flat-cable connector. The card comes with
an adapter cable which lets you use a traditional DB-25 connector.
The cable has a 26-pin connector on one end and a DB-25
connector on the other, mounted on a retaining bracket. The
bracket installs at the end of an empty slot in your chassis, giving
you access to the connector.
To install the bracket:
1. Find an empty slot in your chassis.
2. Unscrew the plate that covers the end of the slot, and screw in
the bracket.
3. Attach the flat-cable connector to CN14 on the CPU card. Wire
1 of the cable is red or blue, and the other wires are gray. Make
sure that wire 1 corresponds to pin 1 of CN14. Pin 1 is on the
right side of CN14.
In single-board computer (non-passive backplane) applications
you will need to connect power directly to the SBC-590 board
using the connector labeled POWER CON. This connector is fully
compatible with the standard PC power supply connector. See the
following table for its pin assignments:
30 SBC-590 User's Manual