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?"
Not to mention, ethernet connectivity could of helped in billing (instead of a phone line) in addition to adding numerous interactive features. They could of been competing with digital cable services and streamed regular TV as well. They should of took me on to lead engineering and management. :-) (I'm available, BusyWithBiz@gmail.com)
-Fred S.