What is the mobile center of Win7? how to open?

Q: What is Win7 Mobile Center? How to open it?
A: Mobile Center is a new function module of Windows7, which can quickly manage screen brightness, sound, power mode, wireless network, screen output mode, synchronization Features and projector related. Very practical, especially for the mobile office, you no longer have to worry about switching the screen output shortcuts, we only need to start the Windows7 mobile center.
Such a convenient tool is of course called by a shortcut key. The shortcut key for launching Windows Mobile Center is the Windows key (the button with the Microsoft logo on the keyboard) + the letter x key. The shortcut to turn it off is also the Windows key + x key. If you can take advantage of the various shortcuts of Windows 7, it will improve the efficiency of use.