The Surface Pro X and Surface Laptop 3 are upgradable, but only a little - The Verge
Western Digital SN740 1TB M.2 SSD 2230 NVMe PCIe Gen 4x4 SSD for Microsoft Surface ProX Surface Laptop 3 Steam Deck - Newegg.com
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Team Group MS30 M.2 2280 1TB SATA III TLC Internal Solid State Drive (SSD) TM8PS7001T0C101 - Newegg.com
Microsoft Surface Laptop SSD 512GB M.2 2230 NVMe Model 1912 MSPN M1119069-003 | eBay
Can you upgrade SSD on Surface Pro 6? - SurfaceTip
All about SSD, HDD, and storage types - Microsoft Support
Microsoft Surface Book 3 15" Touch-Screen PixelSense 2-in-1 Laptop Intel Core i7 16GB Memory 256GB SSD Platinum SLZ-00001 - Best Buy
Amazon.com: Yassdwbn SN530 m.2 2230 SSD 1TB NVMe PCIe for Microsoft Surface Pro8,Surface Laptop 3 : Electronics
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KIOXIA BG5 PCIe 4.0 SSD is compatible with Microsoft Surface Pro 8 Windows 11 PC | BetaNews