a mounting plate that is square or rectangular;

a plurality of fasteners for coupling the mounting plate with the electronic device, wherein a number of the plurality of fasteners is four and each of the plurality of fasteners is positioned at or near one of four corners of the mounting plate;

a single main gear mounted on the mounting plate;

a plurality of secondary gears coupled, respectively, to the plurality of fasteners, rotation of each of the plurality of secondary gears causing a fastening movement of a respective one of the plurality of fasteners; and

a plurality of intermediate gears mounted on the mounting plate and rotationally coupled between the single main gear and the plurality of secondary gears, simultaneous rotation of the plurality of intermediate gears causing the plurality of secondary gears to rotate simultaneously in response to a single rotational force being received by the main gear, the simultaneous rotation of the plurality of intermediate gears causing a simultaneous fastening movement of the plurality of secondary gears,

wherein the single main gear is centrally located on the mounting plate relative to the plurality of secondary gears.