The Lenovo V17-IIL Laptop Supports Single or Dual Drive Configurations Depending on the Battery Installed. (One 2.5" Solid State Drive or Hard Drive with the Smaller 3-cell 42Whr Battery Installed and/or One M.2 NGFF (2280) or (2242) Solid State Drive) or (One M.2 NGFF (2280) or (2242) Solid State Drive with the Larger 4-cell 56Whr Battery Installed) Note: Models that have the larger 4-cell 56Whr battery installed do not support 2.5" Drives due to the larger battery occupying the 2.5" Drive bay. The M.2 slot supports M.2 (2280) and (2242) Drives by moving the standoff bracket p/n L81WA to accommodate the form factor. If the 2.5" Drive was not installed from Lenovo in models with the smaller 42Whr battery, you will need the 2.5" Drive caddy p/n 5B40S21980 and cable p/n 5C10S30043 for installation. (The M.2 slot supports PCIe NVMe Solid State Drives)