MicroSD Express cards are incredibly expensive right now, which has incentivized DIYers to look for alternative methods to improve the Switch 2's storage capacity. Better Gaming on YouTube, tested one such alternative, an open-source MicroSD Express adapter tailor-made for the Switch 2 that supports full-blown M.2 NVMe 2230 SSDs. However, initial testing proved to be unsuccessful.
We have already reported on the open-source adapter Better Gaming is using. Known as the SDEX2M2 project, the adapter takes advantage of MicroSD Express' PCIe roots and integrated NVMe functionality to provide the necessary support to run NVMe M.2 SSDs. Specifically, MicroSD Express takes advantage of the SD Express 7.1 standard, which at its core takes advantage of a PCIe Gen 3x1 interface that supports the NVMe protocol.
