The HP 240 G7 Notebook Supports Either Single Drive or Dual Drive Configurations Depending on the System Board Installed. (Single and Dual Drive Options with a Intel Core i3/i5/i7 Processor: One 2.5" Solid State Drive or Hard Drive and/or One M.2 NGFF (2280) Solid State Drive) or (Single Drive Option with a Intel Pentium or Celeron Nxxxx Processor: One 2.5" Solid State Drive or Hard Drive) Note: If adding a 2.5" Drive to models with a Intel Core i3/i5/i7 Processor, you will need the 2.5" Drive cover p/n L23219-001 and cable p/n L23187-001 for installation. (M.2 slot compatibility: Models with a 8th or 10th Generation Intel Processor support M.2 SATA and PCIe NVMe Drives. Models with a 7th Generation Intel Processor support M.2 SATA only Drives. Models with a Intel Pentium or Celeron Processor do not support M.2 Drives)