I have Rainbow Sherbert version of this… that is Firewire/USB2.0. It works well, though I had some ODD problems in Win2k… but now that all my machines are running XP Pro, this case runs flawlessly. I think i’ll blame my problems more on Woot’s crappy refurb WD caviar drives than this enclosure.
It is made of a plastic shell, and a (rather tough) thick aluminum plating on the inside (to which the harddrive is mounted with screws, and protected with a lid, though I just leave mine open because I swap drives out of it so often.)
It DOES have a fan (rather loud… but still quieter than my relatively quiet computer. I j ust keep it under my desk, and I can’t even hear it).