Interviewing with an Indian in the US

Hi guys-
I have an interview this week with a man from India, He has been here (in America) for 20+ years. I know culture is a little bit different in India than in America. I just want to ensure I do my due diligence to make the best impression. Does anyone have any suggestions to make a good impression? I have read to wear neutral colors and dress conservatively (its an interview, so this is a given). Any advice is appreciated!

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