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※The following is the troubleshooting method of "Step 1: Directly connects video source to display", Please refer to the following instructions.

Language : 

Subject : 
Source or Display Issue
Solution : 
If the monitor or projector can show the display, please try other steps to solve the issue.
If not, the issue doesn't cause by ATEN product. Maybe you could contact and get support from the brand of the source or display to solve the issue first. Then, connect with ATEN product to see it's normal or not.
If the step doesn't solve the issue, please try other steps.