IEEE 802.3at-2009 PoE |
By IEEE 802.3at-2009 PoE standard improved, that is PoE+, can provide the electric power up to 25.5W, The 2009 standard does not allow the device to be used as the power supply of all four pairs of cables.Some vendors have announced products index contains claims 802.3 at standard-compliant products.They (purported) to achieve a high power 51W.These precuts are powered via a single cable with all four main groups other for power form the cable.These cables are Category 5 cable (CAT-5) . |
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IEEE 802.3AF |
PSE provides 44-57 voltage, about 350Ma DC power supply, each port can provide at least 15.4W power, and after 100 meters of cable, PD client can receive must be at least 12.95W. |
IEEE 802.3AT |
PSE provides 50-57 voltage, about 600mA DC power supply, each port can provide at least 30W power. |
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