This 25ft Cross Wired Serial/Null Modem Cable features two DB9 female connectors, allowing you to connect a 9-pin serial port to a serial port, or transfer files from PC to PC via serial connection.
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Summary
Product Description
StarTech.com 25 ft Cross Wired DB9 Serial Null Modem Cable - F/F - 25ft DB9 Null Modem Cable (SCNM9FF25) - null modem cable - 7.6 m