Hello, Just received my SP4 yesterday and it is great. Upgraded from the original SP and love that it is thinner and lighter. I have a wireless adapter for my original typing cover and want to use that with my SP4. I synced the adapter fine and when I connect it to the type cover 4, the light comes on the adapter but I can't type or use the mouse. If I take the adapter off and put it on the original type cover, I can use it with my SP4. I find it hard to believe but is the Type Cover 4 actually not compatible with the wireless type cover adapter? Want to use this at work and dont want the surface infront of me all the time just to type. Thoughts?