Long PoE runs for distant cameras
An Ethernet cable normally limits the distance to a device to about 100 metres. A DIP switch puts the switch into extended mode, where power and data reach up to 250 m, so a camera in the car park, at the gate or in a warehouse yard needs no extra switch in between. Hi-PoE port 1 gives up to 60 W to a more demanding device, while the other ports share the rest of the budget.