6
2-2-1. Interface Connector
4
3
2
1
9 Pin Serial
USB “B” Type
Status LED
1 2 3 4 5 3 6 7 8
Link END
Ethernet
9Pin Serial Interface
PIN
SIGNAL
I/O
Description
2
RXD
Input
Printer receive data line
3
TXD
Output
Printer transmit data line
4, 7
DTR
Output
Data Terminal Ready
5
GND
-
System Ground
6
DSR
Input
Data Set Ready
1,8,9
NC
-
-
USB Interface
PIN
SIGNAL
I/O
Description
1
+5V
-
+5V
2
DATA-
-
Printer transmit data line
3
DATA+
-
Printer transmit data line
4
GND
-
System Ground
