Convert your existing serial cables into null modem cables with the help of Cables To Go's Null Modem Adapters.
. With their molded design providing a solid connection, each adapter is shielded against outside EMI/RFI interference while giving you the flexibility to meet your connectivity needs. C2G DB25 Male to DB25 Female Null Modem Adapter - 1 Pack - 1 x DB-25 Male - 1 x DB-25 Female - Beige 757120024699 Each cable will effectively cross the data transmission lines.A quick and easy fix for your DTE or DCE incompatibilities, connecting two RS-232 serial ports has never been so easy.