Let the hive mind of Engadget get that for you.
"I commonly need to boot a system from an external disc and take a snapshot of the host system. I also then need to burn a copy of the image to a DVD. While I can do it with two separate external devices, and two power supplies, and two I/O cables, it'd be nice to find a small dual-drive enclosure. It would need to have USB, eSATA, and FireWire. Either slim-line or half-height bay for the optical burner would be fine, and space for either a 2.5- or 3.5-inch hard disc. Any ideas?"
I think it's got 2 buttons- L/R buttons on the mouse. Played with it at E3 and it's pretty awesome. The thing does feel a little light for as much force as it's applying back to the user. Basically a scaled-down version of more expensive (think thousands of $$$) haptic devices. EVERYONE who touched this thing was impressed. They're hyping it as a big step for moving haptics beyong the professional/specialist world, but it's really going to depend on the developers building apps that are compatible with it. There's a ton of potential here.