Interface Type and Transmission Direction---- DisplayPort is 20 Pin male and HDMI port is 19 Pin Female, transmits both audio and video from computer to monitor, HDTV, or projector via HDMI cable. Please note this Adapter Can Only transmit a Display Port Signal to an HDMI Display via an HDMI Cable (not included). -------You Cannot transmit An HDMI Signal to DP side. This product is suitable for the connection between the device whose output is DP interface and the device whose input is HDMI interface, such as TV, monitor, projector, etc. It supports video and audio synchronous transmission. The adapter is made of high-purity oxygen free copper and fire-resistant ABS plastic, with a built-in NXP chip, no need external power supply, plug ready to play, convenient and fast