Powerful notebook features combine with Tablet PC versatility in Toshiba's Portege M400. This ultra portable model offers a swappable optical drive, flexible connectivity options, a massive 100 GB hard drive, and RAM expansion of up to 4 GB. You'll see all of your applications clearly on the 12.1" convertible display screen with XGA (1024 x 768) resolution. The display instantly switches into "slate" mode, allowing you to stay productive at you desk, on your feet, or wherever your business takes you. The Portege M400 even has an extended battery life of up to 5 hours. Powered by the latest Intel Centrino Mobile Technology and Toshiba EasyGuard security, protection and connectivity enhancements, the Portege M400 sets a new standard in mobile productivity.