"The 'UniCabby 20 Horizontal' charges 20 Devices up to 14" screen size - Chromebooks, laptops and tablets including protective cases. It features horizontal storage shelves with a built-in cable management system. The UniCabby offers fast, flexible and simultaneous charging with a programmable timer. Maximum security & safety is guarenteed with dual point locking system and separate lockable power compartment. It's easy to move with ergonomic top handles, rounded corner bumpers and multi-directional non-marking wheels. The TabCabby offers silent charging with unique ventilation system and a built-in heat sensor shuts off power automatically if over-heating occurs."