Appliance interface and input chassis

An appliance, including an interface and input chassis is provided. Appliance may include a contact plate, a conductive spring, and a support wall. The input chassis may define a connection aperture extending therethrough. The contact plate may be disposed above the connection aperture of the input chassis. The contact plate may include a top surface facing away from the input chassis and a bottom surface facing toward the input chassis. The conductive spring may be coupled the contact plate at the bottom surface of the contact plate. The conductive spring may extend through the connection aperture. The support wall may be attached to the input chassis and disposed about the conductive spring between the contact plate and the connection aperture of the input chassis.