The Poly External Mic Cable Extender Kit (2215-88019-001) is an accessory for extending the cable connection of a Poly Studio tabletop microphone. It is listed as an optional cable extension kit for that microphone, giving the meeting-room setup more flexibility in where the microphone can be placed.
The kit is listed for Poly Studio X50, X52, X70 and USB expansion microphone setups. It provides a practical way to accommodate a tabletop microphone in these Poly conferencing environments.