0.5m ULTRA THIN BT MALE TELEPHONE CONNECTOR 431a -RJ45 CABLE LEAD ETHERNET CAT5
BT MALE (431a) to RJ45. BT male plug connects to the BT socket & the RJ45 male plug connects to the RJ45 socket/patch panel port of choice. (cable may not be identicle "ribbon" cable shown in photo but will be very thin).