I ended up buying two of these while building a built in desk for my wife. One for her installation and one for my desk. Both work exceptionally well. I bought a 3 1/8 inch hole saw following the instructions but I have a feeling you could do it with a 3 inch hole saw. The fit and finish is suburban and I love that the backup ring has bolt kits so it can't move once tightened. It was very easy to install, made out of plastic but felt sturdy. USB power seems to power everything I need. I would say it was a good price and buy.
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