This is because your Launchkey is currently in 'MSD mode' which allows it to appear a storage device so that you can get access to our onboarding videos. To take your Launchkey Mini MK3 out of 'MSD mode' and stop any prompts when it is connected plug in the USB cable while holding down the shift button and then press the yellow pad in the top right so that it goes dim. You can then press play on the Launchkey, it will then no longer appear as a memory stick.