Telecommunications jack with switchable circuit configurations

Telecommunications jacks and methods of their use and construction are described. One telecommunications jack is adapted to receive a plug, and includes a housing defining a port for receiving the plug, as well as first, second, third, fourth, fifth, sixth, seventh and eighth consecutively arranged contact springs adapted to make electrical contact with the plug when the plug is inserted into the port of the housing along a first axis. The jack includes first, second, third, fourth, fifth, sixth, seventh and eighth wire termination contacts for terminating wires to the jack, and a circuit board arrangement including first and second circuits, the circuit board arrangement including a circuit board moveable in a direction non-parallel with the first axis between first and second positions. In the first position the circuit board electrically connects contact springs to wire termination contacts in a first configuration, and in the second position the circuit board connects contact springs to wire termination contacts in a second configuration.