Summary: I just got these to help someone for use in their apartment. That building had wireless interference all over, and some of the walls were concrete. A wireless signal there couldn't even reach 35ft. With the Powerline adapters, I literally just plugged them in and they worked instantly. I was worried that since the building was around 40 years old, that the electrical wiring might be an issue, but it wasn't.
Summary: I've had this product for about a month. Would recommend for desktop users using a wireless connection.
Pros: Plug and play. Not sure about all the technical read/write download/upload numbers, but it seems to be working. Less hangups than the wireless connection I had. Also a huge improvement in latency while playing games like Battlefield 3 and Black Ops. My router is in the second floor while my computer is in the basement. Granted, I'm the only one in the house using this product. Everyone else uses wireless so I cant say much for how this product works with more than 1 p...
Cons: I wish it came with a longer cables. I think they're around 4ft, not sure, too lazy to find/open the box. But luckily I had a few of my own cables lying around. Also, not totally sure if the security works. Don't really have a way of checking it. I just pressed the only button there on both of the devices and hoped for the best. Guess I should've read the manual...
Summary: Had wondered how well these worked and decided to get a pair on sale. they are a little bit bigger than I expected, but were very easy to hook up, and provide much better speeds than my wireless does. Works well coupled with a switch.
Summary: Very easy to use and install. Plug and go essentially. No more hassle with feeding wires. Works great for smart tvs that do not have the wireless dongle but have the Ethernet port. Fast, reliable and overall superb product.
Conclusion: Bought a pair today. Now set up and working perfectly, in 10 mins. Solves a problem with lack of WiFi in sitting room which is miles away from the wireless router at the back of our old Victorian house with thick walls! Can confirm that these do not like being plugged into e.g. 4-gang extension leads - no damage but just didn't pick anything up. Can't imagine why this is as the one I tried was a cheap one with no surge protection or the like.