Saluti hansproton
That's right, the height is 7mm.
However, you should check beforehand whether this fits:
- phys. Ground
- SATA interface connector (is generally standardised)
- have a look here:
https://www.notebookcheck.net/Acer-Nitro...-> seems to have an additional SSD slot
If an SSD is already installed, you should measure its height.
Unfortunately I can't help any more; you'll just have to unscrew it and see for yourself.
Greetings
Roger