Hub Test Module
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                                          Rev.  19-Feb-2017

    - No IPMC

    - No ATCA Power Entry Module

    - No Redundant Input Power

    - Not Hot-Swappable

    - No IPMBus communications with Shelf Manager

    - about 5% to 10% as complex as the Hub

    - use same parts where ever possible

    - leverage geometries made for the Hub