So this M-Pen is definitely the one for the Mediapad M5 Lite, because I recently bought the tablet and the pen. As far as I know, the M-Pen for the Pro should be included directly with the Pro. I don't know if it is available for purchase separately. The difference is that the pen on the Pro has buttons on the pen and is charged via USB-C. The M-Pen for the Lite has no buttons and needs a battery.