Help make sure this is all I need please?

Hi all. I would like to get a pair of the outdoor Helium mining rigs. I think I am going to get the Nebras. I will be putting this up high (probly on a pole) and running eithernet to it.
So This miner https://www.nebra.com/products/helium-outdoor-hotspot-miner-gateway?variant=33411917054038
This antenna https://www.nebra.com/products/nebra-8dbi-glass-fiber-lora-antenna-860-930mhz?variant=39310898298966

Am I correct in assuming the Ethernet can just be plugged into this?
If possible I would like to use a POE device so that I don’t have to run a separate power supply to it.
Someone on reddit mentioned using this one https://www.amazon.com/gp/product/B001PS9E5I/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1

But it says its only up to 15.4 watts and the miner says “Peak draw of 18W” so I am wondering if that is a good enough supply?? The spec for the miner says “Supports 48V PoE injectors & switches” I could use some help here, I really cant afford to burn this thing up trying stuff.

Is there anything else that I need to order that I am missing???

Thanks!

So based on the website, the outdoor version does accept POE from a switch but you need to remember that standard Ethernet starts to have problems if you run a cable over 300’. You can find some cost affective POE switches now if needed.