Just measured the depth of my Octo, and the total depth is 445mm, and that includes the control box, the thing that has all the connectors. With only 37cm of desk space, the shelve would have to be at least 125 mm high in order to get the Octo placed partly under that shelve. That is, I went 370 mm ‘down’ the side panel and measured the height at that place. Give or take a few mm.