its a cable and powerstrip management tool. it holds your cable and your powerstrip. its the best option if you dont want to put a screw in your desk and still want decent hidden cables. There are many options to add some cable ties and velcro strips. 

with his bracket you can use my power strip brackets and attach your power strip directly on the desk bracket. But you can also use a zip ties for that. my powerstrip bracket can be found in my collection.

I updated the printable files for more stability.