Read several bad reviews. Dirty, dusty, and sluggish. Don't be afraid to purchase. I am a qualified purchaser and I will have to say, I am beyond pleased. Very clean, no scratches, but remember each unit will vary, pending on its usage and where it was kept. Remember these are refurbished units. Plugged it in, filled out my personal info. Got it online via the GREAT wireless USB adaptor that is PROVIDED with the computer. Be sure to plug wireless adaptor into one of the USB 3.0 ports. Lightning fast and has been flawless !! Thanks Amazon for recycling and providing people with great deals like this !!