Steam Deck has M.2 2230 SSD slot, but Valve does not recommend upgrading it - VideoCardz.com
10Gbps Type-C Enclosure for M.2 2230 NVMe SSD JMS583 USB3.1 Gen2 | ZimaBoard Official Store
Amazon.com: SAMSUNG 1TB SSD M.2 2230 30mm PM991a NVMe PCIe Gen3 x4 MZ9LQ1T0HBLB Solid State Drive for Surface Pro Steam Deck Dell HP Lenovo Laptop Ultrabook Tablet : Electronics
Micron has launched the world's first 2TB M.2 2230 SSD : r/hardware
Rocket 2230 NVMe 4.0 1TB - Sabrent
1TB M.2 2230 NVMe PCI Express 3.0 x2 SSD (Solid State Drive)-30mm Half Size, Brand : Samsung PM991 MZ-VLQ1T00, KLFGGAR4AA-K0T0 For Microsoft Surface Pro X, Microsoft Surface Pro 7+, Microsoft Surface Laptop
Amazon.com: Western Digital 512GB SSD PC SN530 M.2 2230 30mm PCIe Gen3 x4 NVMe SDBPTPZ-512G Solid State Drive for Dell HP Lenovo Laptop Desktop Ultrabook Surface : Electronics
Amazon.com: SYONCON AP425 M.2 2230 SSD NVMe PCIe Gen 3.0X4 Internal Solid State Drive Compatible with Steam Deck/Microsoft Surface pro 8/pro 7+/pro X/laptop3/laptop4/laptop go/book3 (512GB) : Electronics
Wd Sn530 M.2 2230 Ssd 1tb Nvme Pcie For Microsoft Surface Pro X Surface Laptop 3 - Solid State Drives - AliExpress
HP M11040-001 - 128GB M.2 2230 PCIe NVMe Solid State Drive - Drive Solutions
SAMSUNG PM991a 512GB SSD M.2 2230 NVMe PCIe For surface Laptop Steam Deck PC CFe | Being Patient