The Corsair MP300 is a PCIe Gen4 x4 NVMe SSD in the M.2 2230 form factor. The 2TB variant is confirmed working in the Framework Laptop 12 (Intel). Note that Corsair reused the "MP300" model name across two revisions — the 2024 batch uses a Phison E27T controller with 162-layer Kioxia TLC NAND, while a newer revision uses QLC NAND, so check the listing carefully if longevity matters.
The TEAMGROUP MP44S is a PCIe Gen4 x4 NVMe SSD in the M.2 2230 form factor, suited to the Framework Laptop 16's secondary slot and the Framework Laptop 12. It is confirmed working as the sole drive in a FW16 running Arch Linux.
The WD_BLACK SN770M is a PCIe Gen4 x4 NVMe SSD in the compact M.2 2230 form factor — the size used by the Framework Laptop 16's secondary storage slot and the Framework Laptop 12. It is one of the few 2TB TLC 2230 drives available and is confirmed fitting and working in the FW16 alongside a 2280 primary.