Theoretically, this 1TB M.2 2230 SSD should be compatible with the steam deck and might be a great addition to a 64GB model for adventurous modders : r/SteamDeck
Nvme 1tb 2230 - Where to Buy it at the Best Price in USA?
Amazon.com: Western Digital 1TB SSD PC SN530 M.2 2230 PCIe Gen3 x4 NVMe 1024GB SDBPTPZ-1T00 : Electronics
Wd Sn530 M.2 2230 Ssd 1tb Nvme Pcie For Microsoft Surface Pro X Surface Laptop 3 - Solid State Drives - AliExpress
1TB NVMe 3.0 x4 3D TLC NAND M.2 2230 Solid State Drive - Toshiba - Drive Solutions
NEW M2 2230 SSD 1TB NVMe PCIe PM991 for Microsoft Surface Pro X 7+ 8 Laptop 3 4 | eBay
NEW M2 2230 SSD 1TB NVMe PCIe PM991 for Microsoft Surface Pro X 7+ 8 Laptop 3 4 | eBay
Dell M.2 PCIe NVMe Gen 3x4 Class 35 2230 Solid State Drive - 1TB | Dell USA
Samsung PM991 1TB NVMe M.2 2230 SSD For Microsoft Surface Pro X & Laptop 3 & 4 781873432180 | eBay
Steam Deck has M.2 2230 SSD slot, but Valve does not recommend upgrading it - VideoCardz.com
Buy 1TB M2 2230 SSD NVMe PCIe Gen3 x4 Compatible with Microsoft Surface Pro X Surface Pro 7 Surface Laptop 3 Online at Lowest Price in Saint Helena, Ascension and Tristan da Cunha. B093GG6X3S
Sn530 2230 256gb 512gb 1tb M.2 Nvme Pcie Ssd Solid State Drive - Pc Hardware Cables & Adapters - AliExpress
SK hynix 1T GB NVMe M.2 2230 SSD ( BC 711 ) 1024GB (Steam Deck Compatable) | eBay
Dell 1TB M.2 PCIe NVMe Class 35 2230 SSD PM991 | Dell USA