Hi, before you purchase this computer, check the seller. I had two of these HP EliteDesk 800 that were supplied by different sellers and both had to be returned. Both wouldn't boot up. The third from MTS Memory Solutions works great. This little computer is more powerful than the size suggests. I am doing 3D drone mapping with mine. If you get one of these that work, you will be equally impressed. It's quite a powerful computer for the price. Buying refurbished computers is a crap shoot. However, with Amazon's return policy the only loss is time and some frustration if the computer needs to be returned.