Using this key , at least in my experience was frustrating, what I thought was going to make my life easier had the complete opposite. It took my top off the line surface book minutes to let me login with the key, and then I didn't know when it was ready, I had to keep trying and trying. Faster to just entering a password which I was able to do instantly. Maybe the next version will work better. Running 1709 Build 16299.371