C2G 02971 RJ11 6P4C Straight Modular Cable, Silver (7 Feet, 2.13 Meters) Connector 1: RJ11 (6P4C) Straight and Connector 2: RJ11 (6P4C) Straight For RS-232 modular adapters for dumb terminal hookups and other serial/parallel extension applications. Warranty: Lifetime