I have used 3 NUC5i3ryh for a few years without problems. I setup 3 NUC7i5bnh in May, 2017.I opened the boxes today to replace the m.2 SSD. 2 of 3 had cracked SATA cables. I can see bare wire where insulation is missing. It isn't obvious that I can order replacement parts online as that is a fast way to fix this. I opened a support ticket and will see how long that takes.Performance was extremely variable. The problem turned out that turbo boost was enabled and the box would run fast but quickly get too hot, then turbo boost would stop and it would cool off, then the cycle would repeat. I disabled turbo boost.