I have a Samsung 960 EVO installed in subject kit. The Optane has a PCIe 3.0 X2, NVMe interface but the pin profile is different from the Samsung SSD.
Thank you for contacting us regarding the compatibility questions that you have between our Intel ® NUC Kit NUC6i5SYK and our Intel® Optane™ SSD 800P Series; I will be more than a pleasure to provide you with all the details about it.
In this case here you will find the lists of compatible NUC kits:
-One of the supported Intel NUC models from the table above (7th generation CPU or above)
-Intel Optane Memory (m.2 format)
-2.5-inch (6.35cm) SSD or HDD SATA drive
-Windows® 10, 64-bit* operating system
-Intel® Optane™ technology software
I regret to inform you that in this case the device that you own does not meet the requirements in order to work with our Intel® Optane™ SSD 800P Series due to the fact that the NUC Kit NUC6i5SYK comes with a 6th Generation Intel® Core™ Processor, my most sincere apologies for the inconvenience that this may cause.
I hope this helps,