The Panasonic ToughBook CF-FZ55 (Mk1) Supports Single and Dual Drive Configurations. (Two M.2 NGFF (2280) Solid State Drives) Note: Both the main storage Drive and the optional 2nd storage Drive are Installed in quick release drive cages and support M.2 SATA Drives. (This model supports (TPM) Trusted Platform Module TCG OPAL v2.0 Compliant Encrypted Drives)