I bought this unit to save some desk space. The idea was to store my keyboard under the middle shelf. I have a number pad attached to my keyboard that doesn't fit under any of the shelves. While I'm happy with every other aspect of this product, I'm utterly disappointed to learn that my keyboard can't be where I want it to be. Other issues: The extended shelves just sit on top of the middle shelf with no hardware or sliding grooves to hold them in place. At the moment this is not a problem for me, but I found it strange. Also, the photo and label are misleading as they say it is a "dual monitor stand". In my experience, only two very small screens will fit on extended shelves (iPad only). I have a bigger screen so I put it on the middle shelf. That didn't even leave room for an iPad on either side of my computer screen. All I can fit is a 5x7 photo frame (standing upright) on either side. I think the adverts and photos are misleading.