Visit this site http://www.totalcardiagnostics.com/elm327 for more information on ELM327. Quickly, Easily and Safely Discover and Take Complete Control of Your Car by Plugging in This Compact, Genuine and Reliable USB Scanner. ELM327 USB plugs into your car and laptop / phone / tablet — and let's them communicate with each other through OBD software. This USB also works on any and every OBD app on Google Play store for Android devices — as we thoroughly tested.more