for Epson Thermal/Impact Receipt Printer Cable Pinouts
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Computer Pin
Computer Pin
Direction Printer Pin
Printer Pin
RXD 2 <-- 2 TXD  RS232
TXD 3 --> 3 RXD  
DTR 4 -?- 6 DSR  
Ground 5 <--> 7 Ground  
DSR 6 -?- 20 DTR  
RTS 7 --- 5 CTS  
CTS 8 --- 4 RTS  


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9 pin D-SUB female connector layout
9 pin D-SUB female connector
at the Computer
25 pin D-SUB male connector layout
25 pin D-SUB male connector
at the Printer
Source(s) of this and additional information: epson documentation from
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