Easy installation. Unobtrusive. Plugs directly into my display's USB port. 3 color lighting types, 3 manual dimming levels and an auto dimming function that allows you to automatically adjust the lighting as the room gets darker or lighter. It is of great importance on my table. Especially with a sit/stand table. The light accompanies you regardless of the height and does not require any adjustment. No extra cables. Brilliant. I'm so glad I bought these 2 to use my 2 monitors for work. The light is in the documents, not the screen, and not in my eyes. Thank you for this product. To be honest it was more than I thought I would spend but I'm so glad I did and it's worth it. ππ