Iomega Helium 500 GB USB 2.0 External Hard Drive - 35421 (Silver) Compact and lightweight USB 2.0 portable hard drive Durable metal enclosure Perfect match for the Mac notebooks and laptops (HFS+ format) Includes 256-bit hardware encryption to keep your files secure. Iomega Protection Suite, Mac Edition software included (download) with antivirus and backup Compact and lightweight USB 2.0 portable hard drive Durable metal enclosure Perfect match for the Mac notebooks and laptops (HFS+ format) Includes 256-bit hardware encryption to keep your files secure. Iomega Protection Suite, Mac Edition software included (download) with antivirus and backup 3 year warranty with registration