Well that doesn't sound like a buzzing sound to me. Sounds more like a sound has been set up to react when doing certain things on the computer.
Go into "Control Panel" and then click on "Sound". In this new window click on the "Sound" tab and you can check the different sounds listed (test them) to see if any of them match the sound you are getting.
I have to say it almost sounds like a notification sound, but for what I don't know.
that why i am here , i have no idea what can cause this connect disconnect event , it looks very random to me ,oh but only happen when i move the mouse , i have already change to another one and still happen ,
maybe it is a mechanical damage to the USB port? but it doesnt appear when i move it by hand the input of the mouse ,
still have no idea ....