Bought for my Sony notebook this adapter, it has replaced the built-in adapter. Finally, I can connect with 5 GHz and 300 Mbit. Can copy with about 12 megabytes / sec, which corresponds to a net real rate of about 96 Mbits via WLAN. AP is a Fritz box 7390. I know all other devices that fail to do so. Very good call quality, Bluetooth also very good.