Sabrent Rocket 4.0 2230 1TB SSD Review - Good things come in small packages
SYONCON M.2 2230 SSD NVMe PCIe Gen 4.0X4 Internal Solid State Drive – SyonCon
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