StarTech 2m Black DB9 RS232 Serial Null Modem Cable F/M - Cable for Modem - First End: 1 x 9-pin DB-9 RS-232 Serial - Male - Second End: 1 x 9-pin DB-9 RS-232 Serial - Female - Shielding - 28 AWG - Black The SCNM9FM2MBK 2m DB9 Null Modem Cable features one DB9 male and one DB9 female connector, allowing you to connect a serial device to a 9-pin serial port, or transfer files directly from PC-to-PC via a serial connection.