I have an old Sauder desk from the early 90s that is built like a tank with a huge surface area. I didn't want to replace it, but I wanted to better organize the area since I've been using a desktop riser to convert to a standing desk. This was the perfect solution. Previously I had to keep some of the power bricks on top of the desk to ensure I had sufficient cable slack to raise and lower the riser. Allowing them to rest all the way down on the floor was not an option. Now I can move them all underneath into the tray, as well as pick up the power strips off the floor.The trays were very easy to install, though I definitely suggest following their installation advice and drilling pilot holes in the mounting surface. If you're worried about drilling through the desk, put a depth marker on the drill bit (a piece of masking tape, wrapped around the bit at the desired depth). They even helpfully provide a template for drilling the holes on one side of the box, making it very easy to get things aligned and straight (for your inner perfectionist). With all 9 screws snugly installed, the trays are very secure and have zero wobble or instability.My only regret is that I didn't know about this product years ago. My desk has a nice deep area for mounting on the back, completely hidden from view by the support running through the center of the desk, and this would've made my work area so much nicer even prior to using the riser. Once my new riser arrives and I do some better cable management, I'll post a photo of the finished installation.One suggestion I have for the product team: It would be nice to have two velcro straps per tray, rather than just one. I have a power strip to mount on each one, and a single strap does the job, but two would make it more secure. Since that is an easily remedied and minor concern, I'm still rating this a 5-star product given the overall quality and stability.It's nice to see you can still find a quality product on Amazon!2021-04-01 Edit: Added photo of final installation