Multiple ethernet devices off a single PoE?

[Lance]

It is clever. I hadn't noticed initially that you need two of them as it still requires two ports on your network. I'm wondering why - if it's a teeny 2-port hub why would you need to split it back instead of just plugging it in like any other hub?

ahhh.

If you have to split it back into 2 then it's just using the other 4 cables.
Ethernet uses just 4 of the 8 wires. So that device is just using the spare wires for another connection.
Not worth £17 each if you need 2 of them. You could make your own.

But if you're going to make your own you could just use some multicore cable. Run one chunky cable with multiple wires. There is some chance of a little crosstalk but you get that with cables in close proximity anyway.

Cat 5E 25 Pair Cable - FS Cables