StarTech.com 1m Black DB9 RS232 Serial Null Modem Cable F/M - DB9 Male to Female - 9 pin Null Modem Cable - 1x DB9 (M), 1x DB9 (F), Black Length: 3.3 ft. Connector: 9 pin D-Sub (DB-9) - female Color: Black Maintain reliable serial connections, free of EMI interference Guaranteed dependability 1x DB9 female connector 1x DB9 male connector High quality shielding prevents EMI interference Molded connectors with strain relief