Rs232 Serial Null Modem Db9 Male To Female Cable Enables A Connection Between Serial Devices At A Distance Of Up To 3 Meters - Constructed With High Quality 28 Awg Tinned Wires With Aluminum Mylar Cable Shielding And Shielded Metal Shell Connectors Help Prevent Emi Interference - Specifications: 3M (9.8Ft) Serial Port Male To Female Color: Black Serial Crossover Cable Note: This Is Not A Straight-Through Serial Cable