Very unstable, have only loaded Windows 10 and unit constantly crashes for no apparent reason.  Have been playing with a month (and sadly just 4-days over the 30 day window or it would be going back).  Was excited about the form factor and intended to use a home video serve to include a 24/7 server running my IoT (Ubiquiti) & Camera (Blue Iris) private controllers network in background.  When it works, it runs relatively fast and well.I bough 7i7BN-X1 unit which comes with Optane memory, so considering reloading from scratch (again) and removing the Optane memory as I feel this is problematic with unit.  Have a 120GB SSD for main storage in the unit.  Will update post as I find issues why unstable since I am stuck with unit now.Have contacted Intel on their forums and gotten some advice of things to try.  None have been holy grail.  Others with this version having same troubles on forums so not alone.Issues to watch for (on a clean install of Win 10):- Shuts down/crashes for no apparent reason (no answer from Intel yet).- Blue Iris camera software will lock up within minutes (Intel sent me updated video driver - no luck).Just a warning as this little device is not cheap, especially the 7i7BN-X1 version.*** Additional Update on 7i7BN-X1 model***- Moved to two starts as I now have a working unit.- Stabilized the NUC but had to disable he Optane Memory, just does not like certain types of applications,  Locks the unit up hard and/or crashes.  Sadly, this was a $70 upgrade that is no longer used.  Waiting for Intel to answer my questions.- Unit does run hot and you can hear fans (low volume) but noticable.