Info on pronto 1st gen remotes cable

http://www.remotecentral.com/cgi-bin/mboard/rc-pronto/thread.cgi?keywords=27359&highlight=tsu1000tsu6000serialcable

The cable for the RC3200, RC5000, RC5000i, RC5200, RC9200 and the Pronto TSU500, TSU1000, TSU2000, TSU6000 all use the same cable.