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Pin layout for the IBM 4840-544 serial (rj45) Connector

Surepos RJ connectorsignalDB 9 connector
1DSR6
2DCD1
3DTR4
4GND5
5RX2
6TX3
7CTS8
8RTS7

Direct connection towards serial printer with IBM DB15 to DB25 connector

Surepos db15->DB25
1 (DCD)-> 
2 (RX)->2 (TX)
3 (TX)->3 (RX)
4 (DTR)->6 (DSR)
5 (GND)->7 (GND)
12 (DSR)->20 (DTR)
13 (CTS)->4 (RTS)
14 (RTS)->5 (CTS)

Direct connection towards serial printer with RJ45 to DB25 connector

Surepos RJ connectorcat5 cable colorRJ->DB 25 colorRJ->DB 25 connector
1 (DSR)white/orangeBlue20 (DTR)
2 (DCD)orangeorangenc
3 (DTR)White/GreenBlack6 (DSR)
4 (GND)BlueRed7 (GND)
5 (RX)Blue/WhiteGreen2 (TX)
6 (TX)greenYellow3 (RX)
7 (CTS)white/brownbrown4 (RTS)
8 (RTS)BrownWhite5 (CTS)
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Page last modified on April 16, 2008, at 02:28 PM