Aaeon SBC-551 Manual - page 39

Chapter 2  Installation    31

Parallel (printer) port connector

(CN4)

Normally, the parallel port is used to connect the card to a printer.

The SBC-551/552 includes an onboard parallel port, accessed

through CN4, a 26-pin flat-cable connector. You need an adapter

cable if 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.

Parallel port IRQ

The SBC-551/552 supports one parallel port.  The port is designat-

ed as LPT1 and can be disabled or changed to LPT2 or LPT3 in the

system BIOS setup.

Pin assignments

Parallel (printer) port connector (CN4)

Pin

Signal

Pin

Signal

1

Strobe

2

Data 0

3

Data 1

4

Data 2

5

Data 3

6

Data 4

7

Data 5

8

Data 6

9

Data 7

10

-Acknowledge

11

Busy

12

Paper empty

13

+Select

14

-Auto feed

15

-Error

16

-Init printer

17

-Select input

18~25

GND