Back in 2018 I posted about where to find accessories and parts for your NUC. One of the sites I listed was Intel’s click.intel.com site. It looks like as of December 31, 2019 that will no longer be valid. If you go to https://click.intel.com/intel-nuc.html you’re greeted with the following message:
“Announcement: This Spare Parts store is scheduled to close on December 31, 2019. Intel will make available recommendations on where to purchase spare parts for Intel NUC products.”
Intel hasn’t put up their recommendations for new places to get your NUC parts, but I suspect they’ll direct NUC owners to simplynuc.com and/or gorite.com. Those two sites are still your best best for parts.