2.Either press < > at the bottom-right of the keyboard, or hold <Shift> and then press the <4> key at the upper-center of the keyboard.
NOTE: This function varies according to the language settings.
Windows Mobility Center
The Windows Mobility Center collects key mobile-related system settings in one easy-to-find place, so you can quickly configure your Acer system to fit the situation as you change locations, networks or activities. Settings include display brightness, volume, power plan, wireless networking on/off, external display settings, synchronization status and presentation settings.
Windows Mobility Center also includes Acer-specific settings like sharing folders overview/sharing service on or off, Bluetooth Add Device (if applicable), and a shortcut to the Acer user guide, drivers and utilities.
To launch Windows Mobility Center:
qUse the shortcut key <
> + <X>.
qStart Windows Mobility Center from the Control panel.
qStart Windows Mobility Center from the Accessories program group in the Start menu.
qLaunch Windows Mobility Center by right-clicking 
in the system tray and select Windows Mobility Center.
