| Mid Span & End Span |
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| August 2008 | |
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Let us take an Ethernet Switch for explanation. An End Span PSE is an Ethernet PoE Switch that carries data and power on a link to a Powered Device such as a PoE camera  A Mid Span PSE is an Ethernet Hub that sits between an Ethernet Switch (Non PoE) that carries data only on a link to a Powered Device and the Powered Device, and injects power to the Powered Device such as a PoE camera 
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