I have bought 4 of this model online over the past... Covid time.  They all have been like brand new and work beautifully.  Of them, 2 were i7 processors instead of i5 and hard drive space was never the same among them.  Ram varied from 4gb to 16gb.  In each case I knew the memory would be barely sufficient and I knew I needed more HD space, so I ordered those as well and had a friend ready to install bigger hard drives.  Another non-spec detail is in every case the graphics cards were the same or better than listed.  These machines are great, the model/year is solid and the seller has great packaging and speed in shipping.  I highly recommend.