Special InstructionsDisplayPort 1.2 GPU/graphics card is required; GPU/graphics card that supports more than 2 external displays is required; Intel HD Graphics is limited to 3 external monitors; not compatible with Microsoft Surface Dock. ^^ DP to 2 HDMI Divide the computer's Displayport signal into two HDMI signals and transmit them to the monitor, which can output audio and video signals at the same time (PS: The device needs to be powered when it is working) ^^ Extended/Mirror Mode Under Windows system, it supports expansion mode and mirror mode, and the monitor can display the same image or different images; Mac OS system only supports mirror mode, not expansion mode, and the monitor can only display the same image. ^^ Micro USB PowerTo ensure the product can work stably, please connect the Micro USB cable to your 5V power adapter (the package includes the Micro USB cable) ^^ Safe and stable Equipped with a Micro USB power supply cable to ensure stable operation of the device, the metal aluminum alloy shell is sturdy and wear-resistant, and the system is fully protected