The ability to use a Shielded Twisted Pair ethernet cable to power the device aswell.
Power Sources
Endspan
Power is given through the Switch
PoE Injector (Midspan)
Placed between two cables, and provides power to the PoE cable. Can also be used to:
- Increase range of PoE cables
- Split PoE cables
- Provide power to non-POE switches
Standards
IEE 802.3af (PoE)
- 15.4W of DC power
- 350 mA max current
IEE 802.3at (PoE+)
- 25.5W of DC power
- 600 mA max current
IEE 802.3bt (PoE++ / 4PPoE)
Type 3
- 51W of DC power
- 600 mA max current
Type 4
- 71.3W of DC power
- 960 mA max current
- Works with 10GBASE-T