ioSafe SoloPRO 4TB Fireproof & Waterproof External Hard Drive, Black (SM4TB1YR) Fireproof - Protects data from loss up to 1550F for 1/2 hour per ASTM E119 Waterproof - Protects data from flood. Fully submersed, fresh or salt water, 10 foot depth, 72 hours. Data Recovery Service(DRS) for any reason. Theft proof - Bolt down to any surface Business-Class Compatibility - PC Mac, Windows Server, Linux