More than two weeks lost because of these dongles (I bought 2) Both hardly work. I could barely open several web pages and voila ... they reboot itself. (I'm on linux) Update firmware (make XP more ...!), Dashboard update (same ...), USB Y-cable, nothing works. At each connection, it is as if I physically débranchait USB. No power problem though. It's not what ilmporte, many have the same problem. People have several, some others not walk without explanation, they are identical pout. Do not play Russian roulette: Avoid at all costs!