I might be wrong , but if you get a used one that was paired to a MS 908P before I don't think it will allow you to pair it to another MS908, however if you get the CD with the drivers for it, your laptop should be able to recognize the used Pro vci so you should still be able to use it off your lap top with an OE software and subscription. Be aware that if you buy a new Maxi flash Pro and want to pair it to your Ms908 to make it into Ms908P just for the ability to do programming to some BMW and Mercedes off your MS908 , whether your year of updates is expired or not , you will have to buy a brand new one year subscription at about $300 or more than it costs per year of updates for the regular MS 908, and from that date forward it will be a MS908 P and you cannot downgrade it back to a MS908 to update it cheaper in the event you don't see enough return form Mercedes Benz and BMW reprogramming for the extra $300 it costs to update a Pro.