The Rocstor DB9 RS232 Serial Null Modem Cable features two DB9 female connectors, enabling you to connect serial devices or transfer files directly between PCs via a serial connection. This high-quality cable ensures a reliable and long-lasting connection, thanks to its molded connectors with strain relief and high-quality shielding that prevents EMI interference. Whether you need to link a 9-pin PC serial port to a serial device or perform PC-to-PC file transfers, this cable is designed to meet your needs. Backed by Rocstor lifetime warranty and free technical support.