Summary: This works perfectly and I did not give a five for two reasons. Price and Warranty service. Well its small and just works. The case does not creaky and is well made for a plastic box. The entire line of POE devises are great , reliable and durable. Over all I would like to advise everyone if it can make cheaper.
Works as expected. Possibly the most obnoxious AC adapter I have ever used.
20 May 2014
Summary: No complaints on the device itself, it works with no problems. The AC Adapter it comes with though, oh boy. Could they have designed something worse that still worked? Unlikely. This is one of those brick-style adapters which usually take up 2 spots on a power strip because of their size. This one though takes up 4 spots. Not only does it extend down from the plug by 2 whole additional plug spaces, but it extends up by half a space. Yes, really.
Summary: The PoE standard has two "modes" -- Mode A where the power comes down pins 1/2 & 3/6, and Mode B where it comes down 4/5 & 7/8. A compliant injector is supposed to supply either Mode A or Mode B power, depending on a device's requirements. In my testing, with a Mode A device this product began to negotiate but never actually supplied power (i.e. constantly blinking LED), and with a Mode B device this product never even tried to negotiate.
Summary: We got these POE Injector for our 4 Panasonic Samsung SNO-6084RN outdoor networked security cameras along with a SNZ-5200 camera connected through POE ports. We are using a workstation connected to it using the Essential software. There have been no issues connected to my home network and so far has been running perfectly, forwarding the video data streams from the cameras on 24/7. These do the job well and are reasonably priced.
Summary: I bought 5 of these to power my IP security cameras. I liked the small size (about the size of a pack of playing cards). I also purchased a BV-Tech POE-I100 Single Port 19W PoE Injector which is about 3x as long (3 packs of cards end to end). The TP-LINK devices failed to operate my higher performance cameras, but work just fine with my lower resolution cameras. I only need high resolution to read license plates.