The sager Win7 drivers works fine on my 1702 XPS and my speed is at a consistent 866.7. The only thing I did differently was that I tried to install the Win8 drivers found on the intel site. The only thing that worked with the Win8 drivers was the bluetooth. I didn't pay too much attention during the sager driver install but both the wireless and bluetooth work fine. It might be worth a try to get the bluetooth working.
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