A wireless endpoint is a Wireless Regional Area Network endpoint, such as a base station or customer premise equipment. In one exemplary embodiment, the methods and devices are effective to mimic the natural function of the spine by allowing flexion, extension, and lateral bending of the spine, while substantially restricting posterior-anterior shear and rotation of the spine. The interactive interface also provides the viewer with still images, full-motion previews, and textual descriptions of the available programs. Alternatively, the width of the edge electrode increase to be 1. The two accommodation spaces can be used to receive a portable electronic apparatus and a foldable keyboard such that the protective function and portability are enhanced.