A USB camera is a versatile device that connects to your computer or laptop via a USB port, offering a range of resolutions and features for various needs. From entry-level VGA cameras to high-quality 2MP models with autofocus lenses, USB cameras are designed to provide clear images and smooth video streaming for video calls, content creation, and surveillance. Features like autofocus ensure sharp focus for varying distances, while higher megapixels deliver better image quality. When buying, consider factors such as resolution, lens type, and compatibility with your operating system.