Startechcom 10 ft db9 rs232 serial null modem cable ff transfer files via serial connection db9 female to db9 female durable construction the scnm9ff 10ft cross wired serialnull modem cable features two db9 female connectors allowing you to connect a serial printer to a 9 pin serial port or transfer files from pc to pc via serial connection designed to provide a reliable long lasting connection this serialnull modem cable is backed by startechcoms lifetime warranty the startechcom