The Acer Swift 5 Pro SF515-51T Laptop Supports Single and Dual Drive Configurations. (One 256GB or 512GB Solid State Drive Soldered to the System Board and One M.2 NGFF (2280) Solid State Drive) Note: The Acer Swift 5 Pro SF515-51T Laptop has one integrated SK Hynix 256GB or 512GB PCIe Solid State Drive integrated on the system board and also has an additional empty M.2 2280 Slot for adding more storage.