3Ft Db9 To 3.5Mm Serial Control Cable Enables Configuration And Calibration Of A 3.5Mm Serial Device Requiring 3-Conductor Rs-232 Serial Remote Control Using A 3.5Mm Audio Jack - High Quality 28 Awg Copper Wires With Al-Mylar Cable Shielding And Shielded Metal Shell Connectors Help Prevent Emi Interference - Works With Computers That Are Equipped With A Db9 9Pin Serial Port - 3Ft (1M) Db9 Male To 3.5 Mm Male Serial Cable Color: Black Awg: 28 Od: 3.5Mm Jacket: Pvc.