I purchased this model to replace a 7 year old computer for my wife.  We had a small glitch upon delivery, however the tech support team sent a replacement part overnight mail.  The unit arrived well packaged, very clean internally and externally.  No dust inside the unit.  Once put into our network, the unit upgraded to W10.  For the last 6 months or so, my wife works on this unit about 5-8 hours a day, mostly spreadsheets, mail and word processing,  It is exceptionally quiet, and we love the small form factor.  I plugged in an external SSD drive for a backup.  The 2TB HD is very good, quiet and works well.  Highly recommend this computer.