Geeks.com carries many external hard drives, and most are the same with a standard hard drive inside of them and they'll all perform as you might expect. Today I've got a Cavalry branded 500GB USB 2.0 and eSATA External hard drive from them, this drive though is a bit different, it features a Western Digital Green SATA hard drive inside of it allowing the enclosure to be fanless, quiet, cool and use less power. So read on to learn more,