I have tried the other two methods and the problem did not go away. The serial number on the box is X001783W89.

@Jason K Hi，This means that you provide the product SN number and then update the corresponding program. If you don't know how to operate, you can try the other two methods first.

@Maxime Jaconelli Hi，Maybe you can try connecting with another computer model, because there may be a compatibility issue.

What do you mean by "Provide SN update program"?

Hello, I recently bought a SEDK1401. I use it on my macbook pro 2019. Everything works except the video output. I tried to connect my screen to the hdmi ports and the DP port with an adapter but n...

Hi@hristo shekov, You can try the technical solution I submitted for testing, if not, please provide your product model and computer model, and fault video.    

Hi there,I have the same/simmilar problem.Do you have proposed soluton?BR Hristo

@Michel Leclerc  I have helped your feedback up, and our team will contact you. Best regardsSELORE Support  

Hi, Thanks for your help. How can I get serial number ?  

@Michel LeclercHi,In order to further resolve your issue, please provide the following:Provide product SN numberYour computer equipment modelPlease attach screenshots of the failure and firmware sc...