I created the 8 8-inch server Rack 1U RJ45 Keystone Patch Panel  to use in my micro server rack setup.  I know it is rather unique and custom but if you want something extremely tiny this will be it. I also designed the thickness of the face to fit snug into a 2020 extrusion so you can just slide the plates in and out however, if you plan to have quite a few of these stacked onto each other I don't recommend this setup.