A clamp lock includes a body, a lock mechanism coupled to the body, and a clamping member supported by the body and operatively coupled to the lock mechanism. The clamping member and body cooperatively define a slot. The clamping member is movable relative to the body by actuating the lock mechanism from a first position, in which the clamping member is configured to engage the part of the portable electronic device, to a second position, in which the clamping member is configured to disengage the portable electronic device. The clamp lock includes a spring configured to bias the clamping member toward the second position. The slot includes an opening at an outer periphery of the body and an inner channel located inward of the opening. The opening has a first height and the inner channel has a second height that is larger than the first height.