This will require that you use keystones which do not extend vertically past the clips. Most optical & utility keystones, passthroughs and couplers will fit, but I had to shop around for compatible RJ45 keystones (I now use Vention's VDD-B04 - img).

If you're not careful when removing the jacks, the brace can get de-laminated or bent (especially if you print <0.2 height).

It should be trivial to extend to any # of ports your print-bed supports, if you do, feel free to post a remix of your own.