Cat 6500: why 42 V input for all modules

Unanswered Question
Jul 30th, 2008

Hi Expert,

I am trying to understand the power efficiency of Catalyst 6500 and I can see that all modules and cards take 42 V on input for all IO Modules, Sups, PFCs and DFCs Cards. I don't think such implementation is power efficient enough as you need multiple DC-DC converters on the Modules and Cards. Am I missing the point? Any comments?

regards

alex

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