Our 20-Unit Laptop Carts store and charge up to twenty-four laptop computers. Our Intelligent Laptop Carts use microchip technology caled the Brain to decrease heat in the cart and proportionally distribute charge to laptops, saving energy and extending battery life. Lockable Cable Clutter Closet in the rear of the cart provides storage and identification for up to 20 wire/cable sets and transformers. Two 10-outlet surge and overload-protected electrical units are mounted in the front or rear of the cart. All carts have been certified to conform with UL 60950 standards for Safety of Informational Technology.