① Please ensure that the hub is connected to the PD power supply;
② Black screen problem is likely to be a secondary adapter, you need to ensure that the HDMI interface on the hub is connected to the HDMI interface on the display, the DP interface on the hub is connected to the DP interface on the display;
③ if the power supply is used and the connection is correct, you can try to switch to another cell phone tablet, or computer that supports display output to test.
④ The problem still exists in the case of multiple confirmations, it might be a product problem, please apply for a return or refund from Amazon within 30 days or email us at Support01@seloretech.com.
