PoE can provide (15.4 watts) over Cat-5 cables.
PoE+ switches support devices such as video IP phones, wireless access points with multiple antennas, and complex surveillance cameras.
PoE+ can supply up to (30 watts) over Cat-5 cables, (with (25.5W) available to devices.
PoE++ switch supports up to (60 watts) of power to each port under (Type 3)
PoE++ switch supports up to the highest level of power (100W) on each PoE port under (Type 4) for Ethernet switches.
The earliest PoE switches from a few years ago generated 15 Watts per port (IEEE 802.3af). Today, most use the PoE+ standard (IEEE 802.3at), which generates up to 30 Watts per port. That's plenty for most devices that people want to connect
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