I've been using for almost two years the Devolo dLAN 200 AVsmart + and am very satisfied. But since I now have Internet over cable network, had to play a fast adapter because I effectively had only 20Mbit throughput on PC. Since I was so pleased and never had a problem, I switched without research on these adapters, as the set was offered in the Blitz offers yesterday. Today the equipment arrived and I was in anticipation to finally have a greater throughput. Installation is as simple as ever and ran (what to do when you plug into the wall socket and big?) Without any problems. Our cables are approximately 60 years old, but I was hoping for improvement. Since I was not disappointed. The throughput has increased five-fold and I was thrilled. Unfortunately, this enthusiasm lasted only until grade. I stood in the quiet study (soon 23 clock) and wondered about strange noises. When I fell down a pen, I noticed that the dLAN adapter is the source. I thought directly to a defect and reading the other reviews. Unfortunately I had read there the same problem. The Council, disable the status LEDs, I have followed - unfortunately without success. A firmware update did not improve. At the moment I'm undecided what to do. The noise is unbearable for prolonged periods, but the adapter does a good job and I was considering how often it really is so quiet that not any other noise drowned out the adapter. Nevertheless, this should be a mature product and not have such problems. Finally, it may Devolo yes very good that they have in my opinion the AVsmart +200 proved. Now I have just contacted the support and am curious if I can offer a solution.
+ More throughput than before (AVsmart + 200) -> about five-fold increase in spite of old cable + Socket remains (very practical in older homes) + Two LAN ports
- Very unpleasant noise, almost unbearable degree in quiet rooms, but also in loud rooms quite audible and perceptible
Would the adapter does not make so unbearable noise, I would buy this again, both as to others. With the sounds but I see from them and the set will return probably right again. Schade Devolo that can (could you) you better!
PS: Regarding. Returning I will wait for the response from the support. Maybe they can help me, without which I must return the set.
EDIT: Fortunately, the Devolo support has reported very quickly. I quote times from the message: "During product development, devolo has placed on a low power consumption special attention. Our devolo dLAN 500 Duo adapter provides 0.3 W consumption in standby mode one of the most economical PLC adapters in the entire market. Technically this is by lowering the operating frequency in reach standby, eg comparable to the reduced clock speed of a laptop computer in sleep mode.
Unfortunately, it happens, by small deviations in the series production, isolated on devices where this frequency is perceived as a whistle. devolo has recognized the problem and remedied. The adapters are functionally perfectly fine; However, the sound should be bothersome, please send the device in question or register. "
I am going to replace the equipment and re-report whether the problem has really done.
