There are Android USB Driver and Flash Tools for you. Why we need USB Driver? The reason on for this is really simply. You know, as many times we need to connect our own mobile device to a computer for the data transmission and on this we need a corresponding USB Driver to be installed on the computer to make the connection normal. Otherwise we may get a message from computer saying it’s an invalid connection or something to that effect. To Flash Tool, for those who want to flash or install a special file like stock firmware to their own Android device, a certain flash tool is generally needed. Actually, in order to use a Flash Tool properly, first you need a correct USB Driver to installed on your computer since that relates to the data transmission.