The desktop disk is on it's way back to the store.
Do you think that either the
Toshiba MC04ACA400E 4TB
Seagate Archive HDD 6TB
will work in a NUC, these are 1.8" drives
EDIT: Forget about this, some site said they where 1.8" drives but these are desktop drives too...
Thank you for contacting the Intel Communities.
The drives supported for the Intel® NUC Kit D54250WYKH would be mSATA and 2.5" Drives.