SF Cable, DB9 Female/Female Serial Straight Thru Extension Cable (25 Feet) Each cable is constructed with molded connectors and foil shielding for EMI/RFI protection Fully molded cable design delivers excellent strain relief Connector thumbscrews provide a quick and easy connection every time / Connectors: DB9 Female to DB9 Female / 9 Conductors + Drain Wire All 9 lines are wired straight through pin-to-pin for ease of compatibility Gauge: 28 Awg / Length: 25ft