OK so I do have a 3.5 HD and what I'm looking for is a 3.5" USB 2.0 or a FireWire Combo Aluminum enclosure. Size would preferably be the smaller the better. As for use, I will not use it that much really, just for backups or to use between computers once in a while. Just looking for a price around $20 with a light bar of some type and something that will not burn up my hard drive. I am in education and sometimes data needs to be transfered but not more than once or twice a week.