Abstract: A mounting device for removably attaching a support apparatus to a work surface. The mounting device utilizes a single clamp or bracket for engaging a support surface and a connection means for the support apparatus. The clamp comprises a single substantially C-shaped planar member for slidably engaging the edge of a work surface. The mounting device comprises a one piece planar member defined by a upper support member, an end member, and a base member which define a receptacle for receiving a portion of a support surface. A retractable arm attaches to the base member of the mounting device which interconnects the support surface mounting device and the computer input device support.