The Dell Latitude 3593 Laptop Supports Single and Dual Drive Configurations. (One 2.5" Solid State Drive or Hard Drive and/or One M.2 NGFF (2280) or (2230) Solid State Drive) Note: If the 2.5" Drive was not installed from Dell, you will need the 2.5" Drive caddy p/n D6J2T and cable connector p/n KNK9Y for installation. The M.2 (2280) and (2230) Drives each use a unique thermal support mounting bracket and cannot be interchanged. The M.2 (2230) Drive uses thermal support mounting bracket p/n HTHJM and the M.2 (2280) Drive uses thermal support mounting bracket p/n HM4TX. (The M.2 slot supports PCIe NVMe Generation 3.0 x4 Solid State Drives)