Chapter 5 Installation
22
Pentium II/III ATX Motherboard User’s Manual
5.7 J4: Parallel Port Connector
J4 is a DB-25 external connector as seen in the above figure. The
following table describes the pin- out assignments of this connector.
Signal Name
Pin #
Pin #
Signal Name
Line printer strobe
1
14
AutoFeed
PD0, parallel data 0
2
15
Error
PD1, parallel data 1
3
16
Initialize
PD2, parallel data 2
4
17
Select
PD3, parallel data 3
5
18
Ground
PD4, parallel data 4
6
19
Ground
PD5, parallel data 5
7
20
Ground
PD6, parallel data 6
8
21
Ground
PD7, parallel data 7
9
22
Ground
ACK, acknowledge
10
23
Ground
Busy 11
24
Ground
Paper empty
12
25
Ground
Select 13
N/A
N/A
5.8 J9: IrDA Connector
This connector is used for an IrDA connector that supports infrared
wireless communication.
Pin #
Signal Name
1 +5V
2 No
connect
3 Ir
RX
4 Ground
+5V IRRX IRTX
N.C. GND
5 Ir
TX
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