There are many types of devices out there, and each one does things just a little bit differently. It can be difficult to find the serial number or the MAC address. But we’re here to help. While we can’t provide the information for each and every single device out there, these are the most common — odds are good that one of them will be very close, if not identical, to the process you need to follow. If you absolutely cannot find the information necessary, you will need to do this on book day. It’s much faster if you register your device(s) yourself beforehand.