Upgrade your Framework Laptop 16 with two additional M-key M.2 modules in any of these sizes: 2230, 2242, 2260, 2280. The most common use case for this is adding NVMe SSDs, letting you load up to an additional 16TB of storage! The Dual M.2 Adapter drops into the Framework Laptop 16 Expansion Bay Shell and requires a Graphics Module Interposer to interface to the system. You’ll also need to update your BIOS to 3.05 or newer for compatibility.
You can access the installation guide here.