The Lenovo ThinkBook Yoga 14s ITL Laptop Supports Single and Dual Drive Configurations. (Two M.2 NGFF (2280) or (2242) Solid State Drives) Note: The M.2 (2242) Drive uses a adapter bracket p/n 02DL954 to accommodate for the larger M.2 (2280) slot. The primary M.2 slot (SSD1) supports Generation 4.0 x4 and 3.0 x4 PCIe NVMe Drives and the secondary M.2 slot (SSD2) supports Generation 3.0 x2 PCIe NVMe Drives.