Convert your existing straight wired cables to null modem or reverser (transmit & receive) cables with these handy, inexpensive adapters. Simply plug these adapters onto the end of a cable and you're done! Crosses the data transmission lines in straight-through serial cables. Economical solution for connecting serial ports on notebooks.
SF Cable DB9 F/F Null Modem Mini Type Low Profile-B004NG3JY6