The DC300 transforms any sit down desk into a sit or stand-up desk. The practical design allows users to lower the work surface flush with desk. The large work surface can be raised to 15.5"" for ergonomic placement of laptop computer, keyboard, mouse, or papers while standing. This standing desk converter rests on top of any desk or table. With no clamping or attachments of any kind to tie you down, the workstation is easily repositioned. Requires monitor with a Vesa mount. Patent No. 9,332,839