Final answer:
The laptop component that functions as a pointing device is the trackpad, which is built into the laptop and used by moving a finger across its surface.
Step-by-step explanation:
The component of a laptop that provides the function of a pointing device is known as a trackpad. Unlike a mouse, which is an external device connected to the laptop, the trackpad is a built-in touch-sensitive surface that allows you to control the cursor on the screen by moving your finger across it. The trackpad is also sometimes referred to as a touchpad. The Fn key is not a pointing device, but a modifier key found on most laptop keyboards that allows access to additional functions. The KVM switch is not a component of a laptop, but rather a device that allows you to control multiple computers with a single keyboard, video monitor, and mouse.