Notice to holders of windows 7 x64, this key is absolutely incompatible. To date there is still no driver at Netgear that allows to use this key with a pc windows 7 x64 bit. Mine has a market time (after many attempts), but it's very unstable. Today I moved and changed connection and not reinstall the key after asking for computer pros. We tried everything yet. I hope this review will be helpful to you as it is indicated as compatible windows 7; but if I had read these comments I would have probably not purchased ...