The Lenovo ThinkBook 14s IWL Laptop Supports Single Drive Configuration Only. (One M.2 NGFF (2280) or (2242) Solid State Drive) Note: The M.2 slot supports M.2 (2280) and (2242) Drives by moving the SSD rubber standoff screw p/n 5R60S37066 to accommodate the form factor. (The M.2 slot supports SATA and PCIe NVMe Solid State Drives)