Power supply to the PoE switch

Standards-based Power over Ethernet is implemented following the specifications in IEEE 802.3af-2003 (which was later incorporated as Clause 33 into ) or the 2009 update, IEEE 802.3at. The standards require or better for high power levels but allow using if less power is required. In multi-pair cases, PoE supplies power as a over two or more of the. [PDF]

Is a PoE switch a managed switch

Being managed or unmanaged in a Power over Ethernet switch is the part that defines whether or not you want to take control of your PoE switch and be responsible for everything that occurs in your net. [PDF]