This first-of-its-kind, truly portable display not only makes PAC Mate more accessible, but it also can be used with desktops and laptops. Featuring a low-cost, simple platform this 40-cell refreshable Braille unit adds the most manageable functionality available to any computer with a USB port. With a pair of three-way Whiz Wheels for rapid navigation and dual purpose cursor routing buttons, users can quickly and accurately obtain the information they need. The built-in VariBraille and programmable hot keys make the PAC Mate 40 Portable Braille Display a convenient extension to any Windows or Windows CE operating environment.