KIOXIA M.2 2230 SSD 1TB NVMe PCIe KBG40ZNS1T02 For Microsoft Surface Pro X 742124108926 | eBay
Pm991 512gb 1tb M.2 2230 Nvme Ssd Desktop Laptop Solid State Drive - Pc Hardware Cables & Adapters - AliExpress
Buy NEW Western Digital SN530 1TB M.2 2230 PCIe NVMe SSD Solid State Drive 30mm RARE Online in Slovakia. 224688985819
Wd ( Pc Sn530 ) M.2 2230 Ssd 1tb Nvme Pcie For Microsoft Surface Pro X - Add On Cards & Controller Panels - AliExpress
Samsung M2 2230 1TB SSD PM991 NVMe PCIe KLFGGAR4AA For Microsoft Surface Pro X 781873432364 | eBay
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