This robust (steel), heavy-duty stand lifts your screen off the desk, allowing 360 degree rotation of the screen, side-to-side and forward and back movement, and height/angle adjustment, giving clear space underneath.

The stand clamps to the edge of your desk as shown in the pic (on my kitchen bench). The back of the arm is currently set at the lowest of 3 heights

The riser extends out to a range of 900mm front-to-back and is still solid at maximum extension.

The tray measures 290mm X 290mm with a 5mm lip and rotates 360 degrees. I've used a filler for an oversized screen stand. It also has a an extension pull-out chrome support on the front that I have never used but it easily takes a keyboard.

Cabling goes up through and inside the arm

It's quite heavy and big which is why I haven't suggested courier. But you can :-)