StarTech.com 3m RS232 Serial Null Modem Cable, Crossover Serial Cable w/Al-Mylar Shielding, DB9 Serial COM Port Cable Female to Male, F/M - 3m RS232 serial null modem DB9 male to female cable; 28 AWG tinned wires with aluminum mylar cable shielding and shielded metal shell connectors; SPECS: 3m (9.8ft) |Serial Port Male to Female | Black | 28AWG | Note: Not straight-through serial cable