Here's a quick breakdown for the lazies, straight from the obd-2.com website. Group buy prices have been inserted as well. Hopefully I didn't fudge any numbers.
Package Features
* Use Windows 3.1, 95, 98, ME, 2K, XP computer, 386 or higher, optimized for low cost laptops.
* Help files and free unlimited online tech support, including vehicle troubleshooting.
* Free software upgrades. Free ship. 32 day money back guarantee. 2 year warranty.
* Includes protected RS-232 serial interface, OBD-II connector and cable (over 100 feet possible) and a selection of the below OBD-2 gateway routers.
* $122 ***$85.40*** quantity one
o Your choice of one of three possible OBDII gateway interfaces:
o ISO - for European, Asian, Chrysler
o VPW - for General Motors
o PWM - for Ford
o Notes:
98+ Concorde, Intrepid, LHS, 300M, 00+ Neon, 01+ DCX, Isuzu, 96-97 Toyota, Celica, Supra Turbo use VPW
96,97 Probe 2.5L, 96 Tracer 1.8L, 96 Escort 1.8L, Triumph, Geo, Catera, 97 Paseo, Camry, Avalon, 1999+ Celica and Supra use ISO
Check listing for network protocol and connector location
* If you will be using on more than one type of car you can:
o Mix or match any two or all 3 OBD-2 gateways in one combo router box.
DOUBLE COMBO - contains any two of the above gateways $142 ***$99.40***
TRIPLE COMBO - contains all three gateways for use on all vehicles $162 ***$113.40***
TRICOM - one piece car connector interface, hardware processing, for all vehicles $182 ***$127.4***
Specialized ISO models
* IMAX - small integral car connector interface with LED status light, water proof to 30 feet $152. ***$106.40***
* ITRAN - UIB (Universal ISO Bus) supports ISO direct and indirect $132. ***$92.40***
Indirect ISO support is required for devices that do not support International Standard Baud Rates such as most USB to serial adapters and WinCE computers. All current models support indirect option except iMax and single ISO unit
