Computer case L with cart has all the external features and benefits of the Standard Porter Case hard side carryon luggage, plus special internal enhancements that convert it into a mobile computer office on wheels for the professional on the go. In the lid, the Computer Case L has a briefcase style accordion-portfolio that folds out allowing you to place files or folders in the three back pockets. The front of the portfolio has 5 pockets and pouches of various sizes to store your CD's, discs, hand calculator, markers, pens, etc. The ring will adjust for larger notebook computers and/or many Digital projector sizes. It will accommodate large size notebooks like the Macs, IBM Power Books, Sony, Toshiba, Dell, etc. As always, the patented CART feature is there to help carry 200 pounds of other luggage cases on top when needed.