This adapter is also used in business line Probook, but the adapter is nightmare. Alhtoght it work just fine in my home WiFi, in some public hotspots, I have signal problem , on some I have BSOD on Windows 7. I have the latest drivers installed, but it does not help. My solution was this: http://www.dlink.com/us/en/home-solutions/connect/adapters/dwa-121-wireless-n-150-pico-usb-adapter
I'd appreciate if anyone can poin to the procedure on how to extract and replace this adapter with something else.