StarTech.com Cross Wired DB9 Serial RS232 Null Modem Cables - StarTech.com SCNM9FM2MBK, The StarTech.com SCNM9FM2MBK 2m DB9 Null Modem Cable features 1 x DB9 female and 1 x DB9 male connector, allowing you to connect a serial printer to a 9-pin serial port, or transfer files from PC to PC via serial connection. Replace worn-out or missing DB9 RS232 cables with this high quality, 2m DB9 RS232 serial null modem cable.Backed by StarTech.com\'s lifetime warranty. StarTech SCNM9FM2MBK 2m Black DB9 Serial RS232 Null Modem Cable F/M