The cable tray is made of very flimsy, thin plastic and in, my opinion, not really suitable to carry multiple heavy cables. Might work for some light office duties with power and an HDMI cables. Attaches to your desk with two screws or adhesive tape, but I would recommend using both, if possible. Also on the short side, so you need several to bridge a larger desk and unfortunately they don't connect seemlessly. The manufacturing of the item is more or less acceptable but not of the highest standards.
All in all, a lot of money for a small piece a flimsy plastic, so not convinced.