Helping your router identify your WiFi adapter on your network. A Mac address is unique. Kinda like your device's fingerprint. It's made of 6 sets of 2 characters and separated by semiolonsì. A Mac address is comprised of letters and numbers. As an example; something like this ... 01:aa:gg:88:bb:ccp What Makes a Mac Address First six characters are classified as organizational unique identifier.. or OUI... popular lookup tools/ databases are IEEE ieee Public Mac Address Look Up Tool... Online Search Tool by Wire Shark, to name a couple- there are many more...some more upto date than the other. If you can't locate the OUI within one, give the others a try. A Tool such as the WiFi Pineapple can link directly to OUI resources giving us an efficient research tool for network analysis. OUI's For Research Utilising such data as an OUI can be of tremendous importance- providing shortcuts, Where once blind, guessing... now, knowing a manufacturer, can point us to default log...