I live in a large multi-level home where my wireless networking has had a certain degree of difficulty with coverage. I have a router that sits in my office on the far upper level of my home whose wireless signal drastically fades by the time I get to the family room or outside deck located on the opposite lower end of the house. For years I have been unhappy with the poor speeds and overall experience of using a laptop in the areas I want to use it in the most. But what was I going to do? I don't have the expertise to strand 500' worth of Cat5 cable across my home. A friend at work told me that he was using a Belkin powerline kit to feed Internet to his computer that was located several rooms away from his router. According to this friend, he was getting fairly good connection speeds. Now in case you have no idea what a powerline network is all about, I invite you to read this Wikipedia article that talks extensively about it. In short, your home's electrical system is used to transmit Internet data from a transmitter to receiver. Powerline networking has gotten a bad rap over the years --- and rightfully so. Initially it provided questionable performance. However, over the years, the technology became standardized and as a result, there are better performing products now in the marketplace. Considering to go with powerline networking was my absolute last choice. However, the more reading I did over the past week about the technology as well as the raving reviews that have been posted about some of the better powerline products, I decided I had nothing to lose but try it out for myself. The product I ended up purchasing was the Western Digital WD Livewire. Recent reviews on CNET and AMAZON have rated this particular model as the very best available as of the writing of this review. Mind you, a newer chipset technology has just been approved this year which means that there will be faster and even more effective powerline kits being introduced shortly. I was not going to wait. At a pricepoint of $100 I thought this could very well be the solution I was looking for. I have to say up front that I was very apprehensive about buying this product. From what I read, powerline technology can be hit or miss and while many people have success with the technology, many see no results at all. Suffice to say, I opened the packaging very carefully anticipating I was going to return it to Amazon. The WD Livewire consists of two 4-port routing units with AC cords and short ethernet cables. There are several huge advantages of going with the WD Livewire over other Powerline models. First, instead of being a big bulky unit with a plug directly attached to its end, the detachable AC cord allows you to move the unit away from the wall. Another huge advantage is the fact that this is a 4-port outlet that will allow you to use it as a hub to plug in up to 3 additional devices outside of the primary Internet connection itself. Setup could not be any simpler. Simply plug one of the WD routing boxes into an AC outlet and then connect it to your router via ethernet cable. Then take the second WD routing box and plug it into the AC outlet on the other side of your home or in a secondary room within 2 minutes and watch the green connection light come on indicating that a communication between the two units has been made. All of this took less than 5 minutes once removed from the box without the assistance of the supplied directions or Windows software whose purpose is to monitor current connections and add new livewire modules. There are two very important things you must know here. First, you should not plug these units into extension cords or surge protectors. They will absolutely degrade performance. Also, both AC outlets that you choose must co-exist on the same power grid in your home. Momentarily, I will talk more about the problems that will occur if you mix and match AC outlets on different grids. Now let's see if this powerline kit really delivered the goods.... First, I took my Macbook Pro and ran speed tests to show its performance, without the powerline, directly wired to my network. This is what you would consider my normal wired connection speed to my Verizon Fios network. Here are the results after plugging my laptop directly into the powerline router via cable at the opposite end of my house. As you can see I did not lose much signal here. I found this to be highly encouraging for what I was about to do next. Since I wanted to expand the overall WiFi coverage at the opposite end of the home I plugged in my Apple Airport Extreme to the newly created powerline Internet connection. I placed this combination near the family room that I wanted to provide a stronger signal to. For kicks and giggles, if you want to see all the advice I received on accomplishing this task, please read my exchanges in this thread. Really have to thank Bob Timmons for helping me out with this. Now mind you, you can easily plug your laptop or networking device directly into the ethernet port in the back of the WD Livewire for maximum signal strength. This speedtest shows how bad my WiFi coverage usually is in the family room. After establishing a powerline connection and using my Apple router to extend it wirelessly, you can see how much the signal dramatically increased. It more than doubled. The Apple iPads are notorious for having bad WiFi. Unless you are close to the source of the signal your iPad will exhibit a minimal amount of signal bars. Prior to hooking up my router to the powerline I was getting 11.50MB/s download speed with one indicated bar of coverage. After the powerline addition it dramatically increased to full bars of coverage and 22.50MB/s download speeds, very similar to the tests shown above. A few moments ago I warned about using powerline networking with AC outlets that are not on the same grid. About 15 years ago we had an extension put on our home that included the new family room I have been trying to cover wirelessly. A new addition means new wiring. All the electrical outlets associated with the addition are on a separate fuse box. The top box shows speedtest results from the WD powerline connected to an AC plug that is on the same grid as the transmitter in the office. The bottom box shows what happens if you plug the powerline into an outlet that is not on the same grid. You can see the dramatic signal loss. CONCLUSION I am really amazed here. I did not think I would obtain the dramatic results that I did. I have effectively been able to expand my wireless coverage, more than doubling the signal strength without having to use cable. Of course, a few questions still remain. Will the powerline provide consistent signal strength or will it fluctuate due to line noise caused by appliances or other electrical interference? I haven't really had time to test the new coverage extensively to figure that out. Another concerns is power outages. We go through several such outages a year and I suspect that the powerline will have to be manually reconfigured each time electricity is lost. All that means is replugging both units into the wall to establish a connection. It sounds easy, but somewhat annoying when you consider your home Internet resets itself. All in all, you can bet that I am one happy camper here. I am hoping this technology will work equally well for those of you with same coverage problem I have. I would suspect just about everyone does.