Got my Power Cover yesterday. Connected it to the SP, nada. Not recognized as being there at all. Not as a keyboard and certainly not as an additional battery. Did all the things MS suggested to make it work, including virginizing the SP and starting from scratch. Spent an entire day and still zilch, nada, zippo... Even tried getting the 'driver pack'. Found the right driver attempted to install it and it errored out saying it wasn't compatible. Grrrrrrrr!!!!