The Lenovo ThinkBook 16p G4 IRH Laptop Supports Single and Dual Drive Configurations. (Two M.2 NGFF (2280) or (2242) Solid State Drive) Note: There are two M.2 slots on the system board and both slots support M.2 2280 and M.2 2242 Drives by moving the M.2 SSD MB Hook Mounting Bracket p/n 5B40S22224 to accommodate the form factor.