NEW Samsung PM991 PM991A M.2 NVMe 2230 SSD 1TB For Asus ROG Flow X13 Steam Deck – Blog BeautyClass
Amazon.com: Samsung SSD 512GB PM991 M.2 2230 30mm NVMe PCIe Gen3 x4 MZ9LQ512HALU MZ-9LQ512A Solid State Drive Compatible with Dell HP Lenovo : Electronics
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. Not sure why it didn't work like the others : r/SteamDeck