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 - 1x DB9 (F) / 1x DB9 (F) - Black - 1m/ 3.28ft - High quality shielding prevents EMI interference - Molded connectors with strain relief