This is the LaCie SSD External Rugged (SED Base) 4TB, a solid-state version of LaCie's well-known Rugged line, trading the spinning-disk Rugged HDD's drop/crush resistance for the inherent shock resistance and much higher speed of solid-state storage while keeping the same tough, field-ready housing philosophy. The 'SED Base' designation refers to Self-Encrypting Drive hardware — the drive encrypts data as it's written at the hardware level, adding a genuine layer of protection for sensitive footage, documents or client work carried in the field without the performance penalty of software-based encryption. It connects over USB 3.1 Type-C, giving SSD-class transfer speeds well beyond what a mechanical rugged drive can sustain, which matters for editing 4K/8K footage directly off the drive rather than copying it to an internal disk first. At 4TB it offers a substantial amount of fast, portable, encrypted storage in a form factor built to survive the same knocks and drops a photographer or videographer's kit bag takes on location.