Title says Windows 10 Professional.  This is whats in it. Wanted to add 8 gig ram extra sent email telling him I was ordering it and he didn't put in extra ram and never heard from him.  Tried to use it but it runs like crap.Windows 10 Enterprise Product Part No.: [TH]res-v  Installed from 'OEM' media.  Would like to return it because it is so bad.  Seller like this should be banned from Amazon.