Samsung PM991a 512GB SSD M.2 2230 Internal Solid State Drive PCIe PCIe 3.0x4 NVME SSD For Microsoft Surface Pro 7+ Steam Deck - AliExpress
Original Samsung PM991a 512GB 2230 M.2 Internal Solid State Drive PCIe3.0 x4 NVME SSD
PM991 & PM991a SSD | Samsung Semiconductor Global
New Samsung PM991A 1TB 512GB 2230 Internal SSD, For Microsoft surface Steam Deck | eBay
Samsung PM991a cut to fit : r/SteamDeck
SAMSUNG PM991a 1TB SSD M.2 2230 NVMe PCIe For surface Dell Laptop Steam Deck PC | eBay
Samsung PM991a 512GB SSD M.2 2230 Internal Solid State Drive PCIe PCIe 3.0x4 NVME SSD For Microsoft Surface Pro 7+ Steam Deck - AliExpress
I tried the Samsung PM991 hack and it didn't work. Validate drive before I cut. Cut past the chips like other posters. Now drive only shows up as 1.1gb and won't format.