What is the WINDOWS10 Super button? How does the WIN10 Super button open?

Super Button function

The Super button provides a common task menu of consistent system widths, including "search", "Share", "device" (usually refers to printing, but also for streaming media and other activities that require extra hardware) and "settings"

Win10 Super Button Open method:

First, touch screen

If your computer can have touch screen function, as long as we touch the screen will automatically display the Charm toolbar

Second, shortcut keys

Using the shortcut key combination, we press the "Win+c" shortcut key on the keyboard to open.