Toshiba HDTB310EK3AA 1TB Canvio Basics USB 3.0 2.5" Ext HDD - Black 1TB USB powered portable hard drive USB3.0 interface - also backwards compatible with USB2.0 Toshiba Canvio Basics Series guarantees great value for money Pre-formatted for use with Windows (NTFS) - needs re-formatting for use with Mac Easy Plug & Play operation