This review is for the BOXNUC8i5BEH1, the "tall" i5 "kit" that does not include RAM or HDD. (Note that i3, i5, and i7 reviews are unhelpfully combined here, unless you know how to filter the reviews.)First things first: this is a great piece of hardware. I have owned several mini-PCs including GIgabyte's last generation and an Atom-based Asus. I've built dozens of PCs over the years.I use this NUC as a media center (HTPC) and so far it is *completely* silent and emits no discernible heat. Considering that my Gigabyte would occasionally sound like a hair dryer and my fanless Atom ran hot, I am very happy with this. I'm not gaming on this unit but for casual use I am very pleased with the thermal profile.On the other hand.The out-of-box experience on this kit is the absolute worst I have ever seen, anywhere. The instructions/documentation is essentially non-existent. The assembly instructions omit many important details, e.g. the direction that components are inserted, etc.And the "support" on Intel's website it literally non-existent. I had to jump through many hoops to get drivers for this thing, since the support pages are only for the non-kit versions and Intel doesn't make an effort to clarify any of this. It wasn't even easy to find a BIOS manual or get into the BIOS configuration. I think most anyone with less experience building PCs would have given up.In short, Intel's hardware team is doing great work with this model. But their support, driver and documentation team are letting the side down.