Yes it does. In my testing with the new 128 GB SODIMM kit from Crucial and Proxmox, the little mini PC correctly sees all the available RAM from the 128 GB kit (64GB x2 modules).
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