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DB9 DB25 Modem 10 StarTech scnm925fm$5.02
Connect your serial devices, and transfer your files. The SCNM925FM 10ft Cross Wired Serial/Null Modem Cable features one DB9 female and one DB25 male connector, allowing you to connect a 9-pin serial device to a 25-pin serial port, or transfer files from PC-to-PC via a serial connection.