The negative reviews you are reading on this product are NOT lies.
M. Garvey, Amazon
1 August 2013
Summary: When I purchased this extension to my powerline network, I read the reviews and thought the "Well, for every 1 person that complains, there are probably 100's that never made the time to praise it". Man was I naive. Just like many warned... the performance on this unit drops DRASTICALLY after about a month. Right now, it's hit or miss on if it will work at all. The frustrating part is my devices will connect to it... but you can't get any data through it.
These are a great way to save a bunch of network wiring.
Tip DS, Amazon
15 January 2013
Summary: This DHP-W306AV unit works great. It is totally interoperable with the other D-Link DHP units, like the DHP310, DHP311, etc. I use the DHP3XX units all through my house for streaming video and surveillance cameras, and they work fine for all of that. I use this DHP-W306AV unit to tie into the same powerline network, but to reach a surveillance camera in a storage building that isn't wired to the same power system as my house.
Summary: I'm going to qualify my judgement on the basic functionality of this product since I only just got it up and running but, like other reviewers, I have serious reservations about D-Links tech support and the competence of the people who write their manuals. The wireless signal in the back room of my home was virtually nonexistent after AT&T decided to grace me with a new router during a service call.
Summary: Took ages to set up using the most cryptic user manual I've ever seen. Had to redo many many many time to get a secure wifi connection. Unsecured easy but.... Then the real bizarre thing started - my iPad or laptop would connect, with a good signal strength indicated, but after 10-15 minutes all downloads start to fail despite same signal strength and ALL lights green on device. This happens all the time.
Summary: This little device had much promise as far as extending internet signal into a weak area of my home. It even worked for about a week. Then, something changed for some reason and despite my factory resets, uploading of new firmware, and multiple reboots according to factory procedure this device no longer syncs with my HomeLink router. It is basically useless now and still less than 30 days old.
Summary: This product works very well. But there are a few VERY important restrictions. You MUST make sure the adapters are located on the same electrical circuit panel. I found these adapaters to work okay in my installation, but ultimately I returned them and purchased additional long range and super long range network extenders, access points, and bridges.