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# Switchable Graphics

In models that support the NVIDIA® Optimus® function, you can save the battery by automatically switching between the external graphic card and the internal built-in graphic card through the NVIDIA® Optimus™ function.

When you work on a simple document or surf the Internet, the built-in graphic card is used to save the battery. When you play a PC game or run a DirectX-based program, the high performance external graphic card is used to provide better graphics.

NVIDIA® Optimus™ may not be supported in some models.

NVIDIA® Optimus™ only supports Windows® 7.

## Registering Programs

Some games and movie players are registered in the NVIDIA control panel by default. However, you need to register other programs in the NVIDIA control panel if you want to use them.

You can register a program in the NVIDIA control panel by performing the following procedure.

1. Right-click the Desktop screen to run the [NVIDIA control panel].

2. In the menu on the left, select [3D Settings] > [Configure 3D Settings] and select the [Program Settings] tab.

3. [In the [1. Select the program to customize] menu, click [Add] to register a program.

   Only files with .exe extension can be registered.

4. Click the [2. Select the default graphic processor for this program] menu and select one among [Use global settings (default)], [High performance NVIDIA processor] and [Integrated graphic].

5. Press [`Apply`] at the bottom of the screen to complete the program registration.