Alright, just ordered the Delock converter. It's not cheap - to be had for about 35€ but including a fitting frame. I also ordered a Kingston KC600 256GB mSATA. I hope the combo will work. I'll report back here once I received and tested it, just in case somebody else runs into the same problem.

Thanks again for the helpful advice!

[ Edited by Chefsessel 02.01.2023 - 11:59 ]