Iomega 33945 eSATA/USB 2.0 750GB Professional Hard Drive External 750 GB hard drive with eSATA and USB 2.0 connection interfaces eSATA offers up to 3 Gbps data rates; USB 2.0 connection offers up to 480 Mbps 7200 RPM rotation speed and 8 MB cache 1-year limited warranty Device measures 4.75 x 1.38 x 8.8 inches (WxHxD)