Save yourself wasted money and frustration.
Some older cameras made for Windows PC's may not work on Apple Macintosh computers, or Mac web camera drivers may not exist. They're simply Plug and Play on modern Macs running MacOS Sur, Catalina, Mojave and Sierra, as well as OSX El Capitan, Yosemite, Mavericks, Lion, and Leopard. Looking to buy a driver-free, fully Macintosh compatible webcam? Have USB 2.0, 3.0 or 3.1 ports? The external webcam models listed here are UVC - USB Video Class compliant.