allowing you to connect a serial device to a 9-pin serial port, or transfer files directly from PC-to-PC via a serial connection. Serial 9 Pin Extension Cables 9 Pin male to female cables. The pin outs are configured straight through so can be used as serial extension cables. C2G Cables to Go Extension Cable Serial extender DB9 M DB9 F 10M moulded thumbscrews black 81381 Cables. Designed to provide a reliable, long-lasting connection. Product Description DB9 RS232 SERIAL NULL MODEM CABLE DB9FDB9M IN SCNM9FM1MBK Cables Serial Parallel Cables....