Toshiba HDTB105XK3AA Canvio Basics 500GB USB 3.0 Portable Hard Drive for $49.99 shipped. Here is a screenshot for reference. Alternatively, it is available at Amazon for $49.99 shipped. This portable hard drive features a 8MB cache buffer, and USB 3.0 interface with up to 5 Gbps data transfer rate. Most places have it for about $60.