These cables will only work with a Display Port source that supports dual mode. They symbol for a dual mode source would have two plus signs to the left of the Display Port symbol. For an Active adapter that works to all Display Ports, check our M51712A. These cables pass the audio signal along with the video signal provided the Display Port device has its audio output enabled. Please note: These cables are designed to connect an HDMI monitor or screen to a Display Port video port. They won’t work backwards, doesn’t work from a Display Port screen to an HDMI video port.