• Secure

    Sub U Systems devices employ virtual private networking (VPN) cryptography validated “secure” under the Federal Information Processing Standard (FIPS) 140-2 by the National Institute of Standards and Technology (NIST).

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  • Powerful

    Enterprise-class information security and performance in a compact appliance specifically targeted for demanding IoT applications.

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  • Efficient

    Sub U Systems devices offer performance rivaling that of large, rank-mounted IP networking appliances in a compact appliance that’s up to five times more energy-efficient than competing products.

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  • Tough

    Our devices represent the pinnacle of information security technology combined with the durability to withstand the harshest operating environments.

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Enterprise-level VPN encryption.



Rack-mounted performance in a portable appliance.

Low Power


Up to five times more energy-efficient than comparable rack-mounted solutions.



Built to handle extreme environments.

When your office isn’t an “office.”

Sub U Systems provides highly secure end-to-end connectivity for users in any environment.

Our customers conduct business from ocean-remote oil rigs and cargo ships to factory floors and speeding trains. We understand your pain points are unique, which is why we will tailor firmware and/or hardware solutions to meet your specific requirements.