Yeah - all the Ubiquiti equipment is 24v (their UniFi WAPs and UniFi Video cameras). And the POE adapter is 48v. So I blew up a WAP plugging it into the wrong port when relocating. That was a $65 lesson. ;^J
I’m wondering about powering my ObiHai Google VOIP gateway/router with one of these adapters as well. Will post back here if I decide to try this…
Interested in doing this, since I want to put it in the ceiling and I dont have any electrical outlets in the center of the house.
Any new updates on the gents that have been using it like this? any changes?
Thanks!
No changes, been running it this way for 1.5 years now with no problems at all. Just have to be really careful about grounds, don’t plug anything into the USB ports on the ST hub if you aren’t sure.
What setup/switch are you going to be using? I was going to put the hub in the ceiling on the 2nd floor as well but I’m now waiting to switch to the Shield TV+Extend Stick setup instead.
Would something like this work?? http://amzn.to/2nSJyql
I have been using these for my Nest Cam’s and Dropcam’s. And still have a couple.
Thanks for the update, I will be using the same switch you recommended in the OP, as far as using the USB port on the hub, I am not going to be using none of them, The hub will be strictly used as a brain for all the things around the house. Anything else I should know about just in case? many thanks!
Wish I could help you, am just starting on this for the first time and doing the research. Hopefully someone else will chime in and help you out.
Nope, you should be good to go with those TP-Link splitters then! I use them for numerous things and they work flawlessly.
@kamran those are the ‘faking it’ way I described above. They should work but they are not legitimate PoE and as such do not comply to any PoE standards, get it wrong and you’ll potentially be damaging electronics.
Just to confirm with you, My main reason for putting in the ceiling is to have it basically on a centralized location in the house. Now, originally I wanted to put it on my server rack in the garage where all the rest of the stuff, such as the router sits, but members stated that it was better in a center location.
Is that correct or I can just leave it in the garage? thanks again!
Ideally yes it would be centralised and I was going to do the same thing up on the 2nd floor ceiling in the central with the bonus for me that half of my 2nd floor is open to the 1st floor as well… Then running cables in attics in Texas heat quickly put me off the idea and it’s currently on the 1st floor sitting in the very corner of the house and it still works surprisingly well.
That being said, I’m not sure where you live and if your garage has A/C but here my garage can get over 100oF and it would probably be a bad idea to have your server rack with all its devices in the garage…
Westchester NY, only a few times it would go to 100 here, but not always. 
Thanks again for the quick reply!
I plan on using this: http://amzn.to/2nSJyql as I already have a spare. Does anyone know of a 2.5 amp solution that I can use on a raspberry pie?
What is the smartthings connector size?? mm??
Thanks
Got one of these from an online store. Works ok. Now I can send a command to cycle the power if ST is not response.
Just wanna say thank you for this post!
I wanted to make my smarthings hub poe enabled too, and bought this exact splitter thanks to your recommendation. I’m happy to confirm my SmartThings Hub v2 is completely operating off poe.
(I bought similar splitters for my fingboxes too so now have many more spare power sockets!)
Same v2 hub has been on the same splitter for what, nearly 5 years now? Zero issues. Take the batteries out though and power the PoE switch with a UPS.
Not sure how many still are looking at this but I bought two of these and a 2.1mm to 2.5mm adapter and just put my SmartThings V2 hub and Phillips Hue hub on PoE over the weekend.
https://www.amazon.com/dp/B0838BTCND?psc=1&ref=ppx_yo2_dt_b_product_details
PoE Switch. No injector.
Hi, Seems this thread is very quiet, but perhaps someone can help me. I am using a POE injector/splitter to connect the Smarthings HUB and injecting the original AC Adapter that comes with the HUB. When doing that the HUB turns on but stays red and ETH port with no signal.
If using the same injector on the ETH port but connecting the AC Adapter directly into the HUB (not through the ETH cable using injector/splitter) the HUB works OK. Any ideas why the issue might be?
Note: Voltage on both connections turns to the same 5.20v, using 3 ft ETH cable for testing porpuses