The Lenovo K14 Gen 1 (AMD) Laptop Supports Single or Dual Drive Configurations Depending on the Battery Installed. Dual Drive Configuration - (One 2.5" Solid State Drive or Hard Drive + One M.2 NGFF (2242) Solid State Drive with the Smaller 38Whr Battery Installed) Single Drive Configuration - (One M.2 NGFF (2242) Solid State Drive with the Larger 45Whr Battery Installed) Note: Models that have the larger 45Whr battery installed do not support 2.5" Drives due to the larger battery occupying the 2.5" Drive bay. If the 2.5" Drive was not installed from Lenovo in models with the smaller 38Whr battery installed, you will need the 2.5" Drive caddy p/n 5B40S22053 and cable p/n 5C10S30217 for installation. M.2 Drives with PCIe Generation 4.0 x4 performance are downgraded to closer to PCIe Generation 3.0 x4 performance due to system board limitations.