StarTech.com SCNM9FF25 25 Gray data transfer cable with DB-9 female connectivity designed to provide long lasting connection. Enables quick and optimum transmission of data. StarTech 25 DB9 Null Modem Data Transfer Cable, Gray48 Cross wired modem cable is used to connect a 9 pin serial port to a serial port and transfer files from PC to PC via serial connection. A convenient length of 25 for ease of installation. Features 1 x 9 pindB 9 female first end, 1 x 9 pindB 9 female second end connectors for clear transmission. Uses copper conductors, aluminum mylar foil with drain shield for easy optimum insulation process. Measures 300"L. Comes in gray color for a new look. Compatible to use with PC. Makes convenient installation. Offers a reliable, long-lasting connection for added convenience. Consist of 25 serial null modem cable DB9F-DB9F for easy connectivity. Meets RoHS standards. Comes with lifetime warranty.