Transfer files via serial connection The SCNM9FF 10ft Cross Wired Serial/Null 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 serial/null modem cable is backed by StarTech.com's lifetime warranty. The StarTech.com Advantage