CM COTS 3U/6U High Power ATRs

Rugged SEALED Heat Pipe COTS 3U & 6U. Available in various slot versions, supporting 3U up to 750 watt & 6U up to 1200 watt payloads.
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6U Military ATR Chassis

46 COTS 6U Military ATR chassis are supplied off-the-shelf, fully MIL certified per MIL-STD for immediate deployment in the field.
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3U/6U Military Backplanes

Our Military VPX GEN4 backplanes support the latest high performance VPX payload cards for cutting-edge applications.
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Military Performance PSU

Supporting a wide variety of AC/DC input voltages & customer defined DC output combinations that deliver up to 1550 watts.
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  • COTS Engineering


    CM Computer delivers Commercial Off-The-Shelf (COTS) Open Bus Systems, offering the most comprehensive range of VPX, VME, cPCI ATR chassis & VMEbus modules in the industry.

    Company Profile
  • Extreme Reliability


    We implement the most challenging parameters from the start, maintaining the theory that each component employed is selected in accordance with a rigorous military quality criteria.

    MIL Certificates
  • Product Functionality


    All CM products are built to outstanding critical aspect performance with indispensable features & Built-in-Test, compounding 30 years of technological evolution.

    ATR Chassis
  • Experience & Support
    Experience &


    Our engineering team generate the most extensive technical manuals, comprehensive product data sheets & real-time source code, providing expertise & continued support.

    VME Modules


The leading military VPX, VME, cPCI ATR chassis & VMEbus I/O manufacturer in Europe & the USA.

Military ATR Systems
Since its establishment in 1987, CM Computer has designed and crafted the highest performance products that balance proven old-school military hardware design with the advantage of current COTS open architectures. CM products are expressly designed for the most demanding applications that require uncompromising quality and reliability.

COTS Products

We design & manufacture all COTS products in-house without subcontracting to third parties.

COTS ATR Chassis
Year after year CM Computer continues to offer the most advanced COTS products, earning CM a solid reputation as a leading military solutions supplier in Europe and the USA. The current series of boards and Military ATR chassis are based on well proven technology based on solutions that have been field demonstrated to be most efficient.

Key Customers

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Latest News:< >

  • Feb 01, 2021


    The highest performance, non-liquid cooled, sealed 3U ATR availble today! Up to 750W at 55°C Ambient.>>
  • Sep 01, 2020


    The highest performance, non-liquid cooled, sealed 6U ATR availble today! Up to 1200W at 55°C Ambient.>>
  • Feb 01, 2018

    3U HES Heat Pipe ATR

    The highest performance, non-liquid cooled, sealed 3U ATR availble today! Up to 500W at 55°C Ambient.>>
  • Dec 18, 2017

    10+ Ghz Vita 67.3 VPX Backplanes

    Cutting edge high performance Backplanes that support all high speed PCIe Gen 3 applcaiions (20 GB/s).>>
  • Sep 7, 2017

    Front-to-Back Loaded 3U Series

    3, 5, 7 & 9 Slot high performance 3U ATR series for SWaP sensitive applcaitions and designed for increased life-cycle scalability.>>
  • May 22, 2017

    CM 3U ATR SEF-18HP Series

    The best natural free-air convection 3U chassis on the COTS market for maintenance free operation in harsh environments.>>

Latest Catalog

CM Product Catalog 2021