Sata Drives

What drives is everybody using and can you use a 3.5 drive

You can’t go wrong with Crucial, and last I checked, you can go up to 4-terrabytes.

Something like this: https://www.amazon.com/dp/B07YD579WM

I am using a Kingston unit and no problems. Samsung EVO is also a great option.

Only 2,5"

It wouldn’t fit internally, if that’s what you mean. Only 2.5 inch drives (up to 9mm thick, I think).

I’m using and am happy with one of these:

Samsung 860 QVO 1TB Solid State… https://www.amazon.com/dp/B07L3D19MY?ref=ppx_pop_mob_ap_share