The metal brackets that hold the keyboard tray did not have holes that lined up. AT ALL. We had to drill new holes in order to attach the tray. The glass for the keyboard tray then did not even fit the tray, there is a gap on both sides which is really odd. My son was disappointed that there was no room on the tray for the mouse, so now we are thinking after all that hassle, to simply remove it. What a pain. Lastly, the desk is very unstable laterally (side to side). After taking two days to put it together (because we needed to drill into metal, fun fun), we realized that taking it apart and trying to put it back into a box to return would be too much hassle (both the top and the tray are glass so packing that up again, no thank you.) We will make do until we can sell it second hand.