A:Answer The Logitech C615 is connected with a USB cable. The webcam is two devices, a camera and a microphone. When you start a program that uses a camera the program detects the camera automatically. At first the microphone was not working. I had to go to Settings / Sound / Input to select the webcam for sound input. The webcam is not detected by all Mac programs. So far I have used it for FaceTime, Skype, and answering phone calls. It does not work with Image Capture. You do need speakers.