I've had one of these Tactrix Openport 2.0 cables for a while now and it's been working great for logging various parameters on the car with the laptop.
I'm not sure if everyone knew, but new firmware is now available, which gives the openport 2.0 the ability to log data straight from the
ECU to a microSD card. Basically you don't have to carry a laptop in the car anymore when logging.
I tried this out yesterday and it works great!
Instructions on how to update your firmware and create configuration files can be found here:
http://forums.openecu.org/viewtopic.php?f=57&t=4319