Why an eSATA Card?
Are you planning to connect external storage to your computer? There's a good chance the storage enclosure will have two or more interfaces from which to choose, including FireWire®, USB, and eSATA. Your computer has USB ports, and it have FireWire ports, too. So if you can just plug into your computer's existing ports, why use an eSATA card? Consider the fact that the eSATA interface offers significantly superior performance to that of FireWire 800 and USB 2.0 interfaces. Sonnet's Tempo™ SATA III 6GB ExpressCard/34 is an affordable solution for adding eSATA ports to your computer so you can take advantage of this fast interface.