I tried the Powernet adaptors on several network devices, including a Blu-ray player, laptop and Internet radio. Compared to Wi-Fi, I saw the most improvement in the performance of my Internet radio and Blu-ray player (when downloading BD Live content) and the least with basic Web browsing on the laptop. BD Live downloads went faster and the Internet radio maintained a steadier connection with the power line adaptor. It’s worth noting that for many Blu-ray players, power line may be your only option for networking. Sony’s PS3 is the only current player that includes built-in Wi-Fi. If stretching a network cable to your home theater system isn’t possible, power line is the way to go.
Is there a downside? First, power line products do constantly pull electricity, so even when none of your connected devices are turned on and you’re out of the house, the adaptor will be using electricity unless you pull it out of the wall. Second, it’s not wireless. The main benefit of wireless is the convenience of being able cut the cord. Finally, they’re not cheap. A pair sells for $299 in a starter kit. Additional adaptors can expand your network for $149 each. There’s no charge for adding additional gear to your Wi-Fi network, but if Wi-Fi isn’t working for you, there may be no choice.
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