A USB 2.0 camera is simply a webcam that uses the USB 2.0 interface standard to communicate with a computer. Unlike its USB 3.0 siblings, which require blue-colored ports and specific drivers, a USB 2.0 camera will work on virtually any PC or laptop manufactured in the last 15 years.
Here are some key features of USB 2.0 PC cameras: usb2.0 pc camera
Not all USB 2.0 cameras are created equal. Look for these specs: A USB 2
Here are some technical specifications of USB 2.0 PC cameras: usb2.0 pc camera