Been using this as a ROON Server it has Roon's operating system installed - ROON ROCK. All you have to do is boot up the NUC and log in to your own account to get this work as a Roon Core. The price includes shipping to Contiguous US. Will post more details, but its top of the line and works seamlessly. I recently moved to a Mac mini as I wanted to run Dirac on it.
Its faster than an off the shelf Roon Core and works well with DSP, Room Correction, PEQ and other higher end Roon functions as well as with big libraries.
Sold for 475$ on eBay.
Thanks for looking,
George