Iomega 33849 eSATA/USB 2.0 500GB Professional Hard Drive Device Type - Removable Hard Drive Dimensions WxDxH - 4.75" x 8.75" x 1.375" Weight - 2.78 lbs. Weight - 2.78 lbs. Connector -- 1 x Hi-Speed USB - 4 pin USB Type A, 1 x eSATA-300 - 7 pin external Serial ATA