Originally Posted by beach-hobo

The LiteOn 812S DVD drive is the same bare drive sold as an external "SX" or internal drive. It uses the exact same firmware. You can just remove it from the SX case and install it in a firewire case.

But my recommemdation would be to sell the Original LiteOn 812S External on eBay and purchase another 8x2S or better yet 1213S. Since it's an original LiteOn external it will bring big bucks. Then purchase a Firewire case. But make sure it an Oxford 911 ChipSet. Better yet get a combo case Firewire/USB just in case you change computers some time in the future. But still make sure it the Oxford 911 ChipSet.
Regards...