Merhault, I just tested the following devices on my NUC and these are the results:
Crucial SSD 2.5 was recognized.
Fujitsu HD 2.5 was recognized.
These 2 products use 5v.
The only device that did not work was a regular mechanical 3.5 hard drive, but once I connected the HD to a power supply, it worked without problems. These HDs required 12v.
I’m using BIOS version 0027.
This could be a compatibility problem with the HD you are using.
Here is a picture I took from BIOS.
