Power over the network cable where there is no outlet
The switch draws power from a PoE++ switch or injector and passes it on to four cameras, access points or IP phones. How much power is available depends on the input: with 802.3bt Type 4 the budget is up to 66 W, with a plain 802.3af input only 9 W. Extend mode stretches the link to 250 metres, and PoE Auto Recovery reboots a device by itself when it stops responding.