Cost-effective and secure, MXI Stealth Key M550 portable USB device offers fast and transparent hardware-based encryption and strong user authentication, with added device management systems for administrators and the ability to carry digital identities. MXI's innovative solutions provide the highest level of protection against theft or loss of data, allowing employees to carry data securely and work anywhere. The M550 features a lightweight, crush-resistant metal enclosure for rugged use by very mobile users.