The Panasonic ToughBook CF-54 Mk2) Supports Single and Dual Drive Configurations. (One 2.5" Solid State Drive or Hard Drive and/or One M.2 NGFF (2280) Solid State Drive) Note: This model supports (TPM) Trusted Platform Module TCG OPAL v1.2 Compliant Encrypted Drives. (The M.2 slot supports SATA Only Solid State Drives)