The Kramer C-D9M/D9F Control Cable are for RS-232 applications to control devices within a professional AV system. It helps compatible devices to transmit RS-232 serial commands to a touchscreen system, PC or other serial controllers equipped with a 9-pin D connector. This black 3 ft. cable is constructed with 3 x 28 AWG isolated conductors, terminated with molded nickel-plated DB-9 male to 2 x DB-9 female connectors.