Connect your serial devices and transfer your files 1m DB9 Null Modem Cable DB9 Female to Female Cable RS232 Null Modem Cable 9 pin Null Modem Cable 1 m Black Female to Female Null Modem Cable 1 x DB9 (F) / 1 x DB9 (F) Black 1m/ 3.28 ft. High quality shielding prevents EMI interference Molded connectors with strain relief