Connection and extension lead with 2 9-pin DB9 connections, Features and Benefits. ·All 9 wires are connected 1:1. ·Practical manual-locking screws. ·Abbreviations: Pl = plug, So = Socket, Złącze A = DB9 żeńskie, Złącze B = DB9 żeńskie, Długość = 1.8m, Ko