Amazon.com: ORICO M.2 NVMe SATA SSD Enclosure Adapter Tool-Free, 10Gbps USB C 3.2 Gen2 PCIe NVMe M-Key, 6Gbps M2 NGFF SATA (B+M Key), Aluminum M2 Case Support UASP for 4TB SSD Size
Steam Deck has M.2 2230 SSD slot, but Valve does not recommend upgrading it - VideoCardz.com
Amazon.com: ORICO M.2 NVMe SATA SSD Enclosure Adapter Tool-Free, 10Gbps USB C 3.2 Gen2 PCIe NVMe M-Key, 6Gbps M2 NGFF SATA (B+M Key), Aluminum M2 Case Support UASP for 4TB SSD Size
NGFF M.2 SSD state drive 2242 to 2280 2230 to 2280 B3Y1 - Walmart.com