In article , Andy Burns
 wrote:
> I know there are PoE hats available for the 3B+ but I only have a
> 3B. When buying some 12V PoE splitters for CCTV cameras, I noticed
> this ìUSB splitter, which arrived today, and works very nicely.

> 

I've seen these devices advertised before but what
do they do? Power-over-Ethernet? What's 48 volts to do with it?

Can someone put me out of my ignorance?

Richard

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