Toshiba Canvio HDTB310XK3AA 1TB USB 3.0 Portable Hard Drive for $39.99 shipped. need to sign up for Staple’s rewards program, which is free and easy. Here is a screenshot for your reference. 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 this portable hard drive for about $59.