i saw this model boxnuc7cjyh2 what does the 2 digit at end of the model stand for? I didn't see it in this site

[AlHill]

The "2" indicates an EU power cord.

Look under "ordering and compliance" here:

https://ark.intel.com/content/www/us/en/ark/products/126135/intel-nuc-kit-nuc7cjyh.html

Doc

[n_scott_pearson]

...And the H means that it is the taller chassis that has a drive bay that can hold a 2.5" SATA HDD/SSD/SSHD.

...S