DB9 male to DB9 female null modem adapter
Brand name(s) : C2G, Cables To Go, Quiktron

Convert a serial cable into a null modem cable with this handy adapter, a quick and easy fix for your DTE or DCE incompatibilities. Crossing the data transmission lines in straight-through serial cables, this adapter will connect two RS-232 serial ports. The adapter's molded design provides a solid connection while shielded against outside EMI/RFI interference.