The Lenovo ThinkBook 14s Yoga G2 ITL Laptop Supports Single Drive Configuration Only. (One M.2 NGFF (2280) or (2242) Solid State Drive) Note: The M.2 (2242) Drive uses a adapter bracket p/n 02DL954 to accommodate for the larger M.2 (2280) slot. (The M.2 slot supports Generation 4.0 x4 and 3.0 x4 PCIe NVMe Drives)