X-posted, Ergotron sit stand desk with keyboard tray and work surface. Like new. Clamps to any desk or table. See details on Ergotron site: https://www.ergotron.com/en-ca/products/product-details/33-350#?color=black Also a video of how it works: https://www.youtube.com/watch?v=cjKIXEh-Y-0 Retails new for $750+tax