Start up, rev up, change gear and go with the engine USB hub! Do you love the roar of an engine? Start the day with a smile on your face when you use the USB engine. When the USB terminal is connected to the PC, the engine sound will begin. The USB Motorbike Engine Hub is quite simply the most perfect computer accessory. The engine has 3 ports, you can use each for plugging in you electrical goodies (eg MP3, digital camera, memory sticks etc.)The engine vibrates and goes up and down, you can rev the engine, and rev the gears all with completely realistic sound and movement!You will Marvel at the precise engineering, realistic exhaust and intricate working parts.