Gigabit PoE+ Injector Adapter - 30W 48V Power Over Ethernet Plus - 10/100/1000Mbps IEEE 802.3af/at Compliant - Up to 100 M (328 ft) Range, by ThePoEstore

These work great for our 50 watt demanding camera systems. Excellent value and very useful product.

bough it to replace a large cable hub to connect my avaya and it works perfectly

I purchased this for use with a Unifi access point. What can I say, it was very simple to install and configure. You just plug it in and it works. The build quality is as expected and the price is very competitive. I highly recommend it.

Worked as advertised

It worked exactly as advertised! This seamlessly allowed my PoE security camera to work with no issues. Really easy to install and it didn’t take much space. It’s well made with a light indicator to let you know if you’re not connected with a red light indicator and if you’re finally cooking with bacon grease with a green light indicator.

I got this to provide power to a TP-Link outdoor POE++ passthrough switch. It’s working great with three POE security cameras and a POE access point connected to the TP-Link switch. The POE injector is in my network closet so it has the added benefit of being able to plug into my UPS and keep that part of the network up for a while during a power outage.

Been using these to drive Raspberry Pi 4 w/imx477 camera module as security cameras on 100’ cat 6 cable. They are allowing 1080p video streaming 24/7, without dropping packets, or at least mot noticeably.

I got this to use with a PoE security camera that is hooked up to an NVR. This one particular camera has been giving me a lot of issues where it disconnects and often needs to be power cycles numerous times before it will be detected correctly. Because of its distance from the NVR and the age of both pieces of equipment, I suspected that it might not be receiving enough power. So, I connected this PoE injector between the NVR and the camera and it powered on and connected correctly in the first try. I think this is a sign that it has done exactly what I needed. Time will tell if the camera continues working so well.I picked this one because of the low price but it does have the disadvantage of only supplying a single PoE port. I think for many applications it would be advantageous to get a PoE injector that supports multiple ports.