The Iomega UltraMax Hard Drive is a high performance (eSATA 3GBits/sec) storage solution with multiple connection capabilities and a sleek design that perfectly complements the latest Mac computers. At-A-Glance: Versatile — Multiple connection capabilities (transfer rates of up to 3GBits/sec with eSATA) High capacity — Massive storage available for photos, music files and videos Mac friendly — Preformatted in HFS+, therefore works seamlessly on Apple computers Now compatible with Mac OS X 10.5 including Time Machine Drive must be reformatted for use with PC (instructions included)