State of the art SATA technology brings breakthrough 3Gb/s performance to digital video workstations, entry-level servers and desktop systems in a sleek, durable and stackable external hard drive. This is a complete external SATA (eSATA) solution that includes an eSATA hard drive, eSATA PCI Card & SATA cables, CD-ROM, Power cord, Quick start guide, Technical support and warranty guide and eSATA PCI host adapter card.
Read the review below, this is a great drive and I have 2 and they are so fast. The price is worth if for the drive alone. I opened one of my last ones, stuck a 250gb in and used the 500gb in my Raid set up in the main PC. Price includes delivery.http://www.trustedreviews.com/storage/review/2006/11/16/Seagate-500GB-eSATA-External-Hard-Disk/p1
Forgot to mention you can boot from these drives.
Also whisper quiet. :-)