Hardware update for Stable diffusion - System Building and Upgrading
It might be a simple issue of inserting the RAM wrong in some cases. However, if your RAM is not detected even if you didn’t do anything, then you might have some configuration issues or bugs.
GPU Expansion Chassis | eBay
XUMIUZIY External Graphics Card Dock for Thunderbolt 3 4, EGPU Dock with PCIe 16X Slot, USB4 Laptop - ForIntel JHL7440 Aluminum Enclosure, with SFX Bracket.