StarTech.com 3m RS232 Serial Null Modem Cable, Crossover Serial Cable w/Al-Mylar Shielding, DB9 Serial COM Port Cable Female to Male, Compatible w/DTE Devices - Tool-Less Design w/Thumbscrews, Black, F/M (9FMNM-3M-RS232-CABLE) - null modem-kabel - DB-9 til DB-9 - 3 m