The Lenovo IdeaPad Yoga Slim 7-14ITL05 Laptop Supports Single and Dual drive Configurations. (One M.2 NGFF (2280) Solid State Drive and/or One M.2 NGFF (2242) Solid State Drive) Note: There are Two M.2 slots on the system board. one slot is for a M.2 (2280) Drive and one slot is for a M.2 (2242) Drive. (The primary M.2 (2280) slot supports Generation 4.0 x4 and 3.0 x4 PCIe NVMe Solid State Drives)