Tests standard PC cables for continuity and wiring configuration. Product featuresIdentifies open, shorted and cross-connected wires Maps both ends of the cable 9-volt battery included Connectors includedRJ45 (Shielded & Unshielded) and RJ11 Telephone RG58/59 BNC Coax DB09 Male/Female DB15 Male/Female DH15 Male/Female DB25 Male/Female CN36 Female USB A type/B type