The ICY DOCK ToughArmor EX MB491V5K-B is a robust U.2/U.3 NVMe SSD mobile rack enclosure designed specifically for mission-critical military, industrial, and in-vehicle computing systems. Constructed with heavy-duty full-metal housing, the MB491V5K-B is inherently compliant with flammability requirements and offers superior durability under extreme conditions. Its removable drive tray with metal barrel keylock and thumbscrew secures the SSD in place, preventing unauthorized access and protecting the drive against shock, vibration, and accidental ejection during transit. With support for PCIe 5.0 and up to 128Gbps transfer speeds, the MB491V5K-B delivers the bandwidth needed for real-time analytics, aerospace data logging, AI model training, and other high-performance applications.