WD BLACK SN770M 1TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck WDBDNH0010BBK-WRSN - Best Buy
WD ( PC SN530 ) M.2 2230 SSD 1TB NVMe PCIe For Microsoft Surface Pro X 7+ 8 | eBay
Amazon.com: ADATA 1TB 2230 SSD, Legend 820, NVMe PCIe Gen4 x 4 M.2, R/W Speed up to 5,000/4,500MB/s, Internal Solid State Drive Great for Steam Deck, Microsoft Surface and Gaming Consoles. :
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SYONCON M.2 2230 SSD NVMe PCIe Gen 4.0X4 Internal Solid State Drive – SyonCon
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Addlink New S91 2TB 2230 NVMe High Performance PCIe Gen4x4 2230 3D NAND SSD Compatible with Steam Deck, ASUS ROG Ally, Surface, Mini PCs - Read Speed up to 5000 MB/s - (ad2TBS91M2P) - Newegg.com