Level power and speed, nothing wrong but flawed pollute my life: - The mini-display port output requires an adapter to connect it to a video projector, I ordered one (for Apple) and it does not work, one model seems to work but it is not available on the French site DELL !! - The connector of the AC adapter does not take much in making it disconnects when I move the laptop. - The PAD is not working properly, it crashes after one minute of use, you must disable / reenable without stopping, pffff!