NEW static sealed 6U/3U ATR Chassis

The SEF-HP series for extreme free-air convection performance (competitive vs forced air ATRs) for silent applications up to 300 watts.
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Advanced 6U 1" Pitch ATR Chassis

Latest generation 1" Pitch versons of our SIXHEX & HES models provide increased capabilities, power & dissipaton performance.
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6U Military ATR Chassis

35 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 Military ATR Chassis

Designed for cost effective, compact military aerospace platforms & UAV applications up to 575 watts. MIL-STD-461F certified.
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CM COTS 6U Modules

Over 14,000 VMEbus modules in service, serving Military, Rugged, Industrial & Commercial applications in all corners of the globe.
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3U/6U Military Backplanes

Our Military VPX, VMEbus & cPCI backplanes provide unlimited wiring flexibility & extended functionalities.
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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 25 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:< >

  • Sep 12-15, 2017

    London DSEI Show

    DSEI - Defence and Security Equipment International exhibition attended by CM Computer at stand S3-100 in the ExCeL London.>>
  • May 22, 2015

    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.>>
  • April 7, 2015

    CM 6U ATR SEF-18/20HP Series

    Static sealed 6U ATR for applications up to 300W. No fans, silent, deploy and forget solution for operation in rugged environments.>>
  • Feb 9, 2015

    CM VPX Flexi-Circuit Solutions

    VPX ATR I/O wiring solutions using rigid-flex circuits for high density applications requiring up to 500 I/O lines. >>
  • June 19, 2014

    New CM ATR Buyers Guide

    A complete 150 page CM Catalog for system integrators and project managers, offering extensive ATR analysis.>>
  • May 15, 2014

    CM 6U SIXHEX-20HP ATR Chassis

    This new 6U heat pipe ATR chassis delivers 1" pitch slots, achieving reduced card-rail temperatures for increased performance. >>

Latest Catalog

CM Product Catalog 2016