If you are an Android mobile device user, with a tablet or phone, you may at some point desire to connect it to your Windows 7 computer over USB. Generally we do this so that we can use the debug interface with software utilities such as ADB.exe (Android Debug Bridge), which is included with the Google Android SDK.
Upon first connecting your Android device to your Windows 7 system, you might realize that there is no device driver available out-of-the-box to allow the debug interface to work properly. When you open Device Manager (devmgmt.msc) or Computer Management (compmgmt.msc) – which contains the Device Manager MMC snap-in – you might notice a generic icon representing an “Android Device” under the “Other Devices” category. Basically, this means that Windows 7 recognizes the presence of the device, but doesn’t know how to “talk” to it. To get Windows to talk to our Android device, we must install the Google USB driver.