Systems for securing mobile devices such as laptops are provided. Such systems are characterized by two end members, each with a male electrical connector, that engage opposite sides of mobile device, a crossbeam between the two end members that cradles the underside of the mobile device, and a mechanical linkage that is used to release the mobile device. In addition to a slim form factor, systems of the present invention can comprise registration posts to align a top edge of the mobile device to the crossbeam, a receptacle for a power adapter connector, and a locking mechanism to lock an end member to the crossbeam and optionally also lock the power adapter connector to the system.