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    The M3-PM-LAN24 and M3-PM-LAN24P modules provide network switch support in the M3C4G system. Both have a Cisco ESS 2020 switch that provides reliable operations under shock and vibration conditions typical for mobile applications. Each module has two (2) GE ports (1-front, 1-backplane) and are auto-sensing. Both modules feature 23 FE ports; four (4) are PoE+ (the combined power on all four (4) ports is less than 5 W maximum) and on the M3-PM-LAN24P module, 12 of the 23 ports are also PoE (IEEE 802.3af).