Purchased this computer for my college - going grandson.The seller sent a computer that looked ok. There were marks from where previous stickers had been removed. They sent it with a non-Apple charging cord.The computer only worked if plugged in. Would not even come on, if not plugged into outlet.Computer would not charge. Thinking it may be the non compatible cord, we used an Apple brand cord . Still would not charge.Returned the computer, via UPS. Tracking showed it was received 5 days later.It is now nearly 3 weeks later, have not received a refund, seller will not contact me.  I am still out $670,I have waited for them to make this right, or even contact me, before leaving a poor review.Hope this helps.Don’t buy refurbished from Amazon unless your willing to take the chance.