RJ45-T568A Cable Plug Pinout

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Rj45-t568A pinout.png

The image above is from ShowMeCables.com

Pinout RJ45-DB9/DB25 Adapter to T-568A

Function Wire
Color
RJ-45
Pin
to DB25 FEMALE
Pin
Function
RTS Blue 1 ---- 5 CTS
DTR Orange 2 ---- 6 DSR
GND Black 3 ---- 7 GND
TXD Red 4 ---- 3 RXD
RXD Green 5 ---- 2 TXD
DCD Yellow 6 ---- - Not Used
DSR Brown 7 ---- 20 DTR
CTS Grey 8 ---- 4 RTS

Other

See Cable Spec