We have carried out the immunity tests for our HX2VL DVKs, including the IEC-61000-4-3 test and passed the same so our hub should be compliant.
Please check section 4.4 of the App Note for hardware guidelines to consider for EMI- https://www.cypress.com/file/122726/download
Thank you for your answer. I had followed the guideline which you shared while designing the Hub. But I am still facing the issue.
Can you verify my schematic/layout to find the issue?
Yes, please share the schematic and layout files for us to review. If it is confidential, you could send them using the private message option or send a mail to firstname.lastname@example.org as well.