Parallel Interface
Connector and Icon
Pin
Signal
1
Strobe
2
Data Bit 0
3
Data Bit 1
4
Data Bit 2
5
Data Bit 3
6
Data Bit 4
7
Data Bit 5
8
Data Bit 6
9
Data Bit 7
Serial Interface, Powered and Non-Powered
Connector and Icon
USB
Connector and Icon
ENWW
Pin
Signal
10
Acknowledge
11
Busy
12
Paper End
13
Select
14
Auto Linefeed
15
Error
16
Initialize Printer
17
Select IN
18–
Signal Ground
25
Pin
Signal
1
Carrier Detect (12V if powered)
2
Receive Data
3
Transmit Data
4
Data Terminal Ready
5
Signal Ground
6
Data Set Ready
7
Request to Send
8
Clear to Send
9
Ring Indicator (5V if powered)
Pin
Signal
1
+5 VDC
2
- Data
3
+ Data
4
Ground
Parallel Interface
71