Abstract: An assembly for mounting a table, tray or other removable component to a chair to support a laptop computer or other appliance includes a socket that can be permanently mounted in the chair arm and a bracket or mounting assembly that can be mounted on the bottom of the removable component. The socket includes a sleeve with a collar mounted on the top of the sleeve. The collar surrounds the area around a hole in the chair arm through which the socket sleeve extends. The sleeve is attached to an internal frame member. A spring biased plug shifts within a cavity in the sleeve. A rigid pin located on the bottom of the removable component is inserted through a central opening in the collar into the cavity, forcing the plug into the sleeve. The table is firmly supported by the socket, but it is free to rotate in a horizontal plane.