1TB OPAL SSD (main drive) FZ-VSD401T1U Features: User-replaceable -- can easily be removed using pull tab or can be securely locked down using locking screw (FZ-VSW551U includes set of 14 screws) Features protective cage to reduce chance of damaging the drive itself Compact M.2 form factor, fast NVMe connector FIPS 140-2 hardware encryption can be activated (by default it is turned off) Specifications: Weight 1.9 oz. Warranty 1 Year Dimension 1.9" x 4.0" x 0.4"