In my testing, the Trigkey S7 Pro Mini PC does indeed support the 128 GB RAM kit that was released by Crucial. I have tested in my Trigkey S7 Pro and the little mini PC correctly identifies the RAM and it is noted at 128 GB (see BIOS image below)
You can buy the RAM using the Amazon links here (which i get a small commission on if you purchase from here):
- 128 GB DDR5 SODIMM kit: https://amzn.to/4i5g5zN
- 96 GB DDR5 SODIMM kit: https://amzn.to/3D70TDv
