Designed to securely store and charge notebook PCs from minis up to a 15.6-inch diagonal screen size inside the classroom, these innovative carts have a large compartment with up to 30 individual, smooth-edged shelves for easy, quick, and safe loading and unloading by teachers and students, and a separate, locked IT compartment to store notebook power adapters (Charging and Managed Charging Carts) and Ethernet connectors (Managed Charging Carts). The HP 20-Notebook Charging Cart stores and charges 20 notebooks PCs. The HP 20- and 30-Notebook Managed Charging Carts store and charge 20 or 30 units and include Ethernet cables for convenient batch installation of software updates or virus protection.