RJ45 8P/8C socket to socket.
Wired in crossover configuration this not a straight through joiner.
Pin #1 ==> pin #8Pin #2 ==> pin #7Pin #3 ==> pin #6Pin #4 ==> pin #5Pin #5 ==> pin #4Pin #6 ==> pin #3Pin #7 ==> pin #2Pin #8 ==> pin #1
Note: Not suitable for Network Cables