Slide this cable management bracket onto your desk and tuck all your cables up under the desk, or along the back of the brackets.

Desk can't have a lip or non-uniform top surface as the clip slides onto the edge of the top surface of the desk.

I print with no tolerance for a nice tight fit that doesn't require any adhesive to stay put, but you could also use double-sided tape to fix it in place.

Print flat on the bed, no supports. PLA works fine, as I'm sure other rigid materials like ABS or PETG would too. I printed with 4 perimeters (walls) and 40% infill and they are very solid.

STL files for multiple table widths are provided, with and without a 0.1mm tolerance. If you want different dimensions that are not attached and don't have/want Fusion 360, let me know the dimensions and I'll generate and attach it.

Fusion 360 model is attached and has parameters for the width of the desk, and the dimensions of the cable tray, or tinker with the model to get it exactly how you want.

Enjoy!