These are excellent refurbished units. I got mine from the seller PT ELECTRONIC TECH LLC as they had a 100% positive feedback and they did not disappoint. The unit practically looks new, just some very subtle minor wear on the lid really from just normal daily use/put in and out of a soft bag/backpack it looks like.Runs fast, the i5 has 4 physical cores and 4 hyper threaded logical units so "8 cores" and 16 GB of RAM along with a 512 GB speedy intel SSD. These are fantastic modest units, save some cash and get one of these if you have a relative who just needs a fast, dependable and plenty of power enough for a basic everyday productivity user vs spending quadruple the amount on something newer. you can't beat the value of these lenovo T490 refurbs.