The AVer CAM520 is a user friendly USB PTZ camera for mid to large rooms. The CAM520 is an affordable, professional-grade USB PTZ camera optimized to deliver an exceptional video communication experience. It is compatible with all of your favorite apps, Cloud Services and audio systems connecting to virtually any desktop or laptop via a single USB cable. With the CAM520 USB PTZ camera, video conferencing is now as simple as plugging in a USB cable.