StarTech 2m Black DB9 RS232 Serial Null Modem Cable F/F - Cable for Modem - First End: 1 x 9-pin DB-9 RS-232 Serial - Female - Second End: 1 x 9-pin DB-9 RS-232 Serial - Female - Shielding - Nickel Plated Connector - 28 AWG - Black "The SCNM9FF2MBK 2m DB9 Null Modem Cable features two DB9 female connectors, 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.