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RE: USB 3.1 (Thunderbolt Driver) update issue on Latitude 7370 in Windows 7

"I've tried doing it from the dell command update, direct download from dell and direct download from intel "

If you haven't done so yet, I'd suggest you update the other chipset drivers as well. In your Dell Product Support page, please update them one by one or in correct (Installation) order.

How to reinstall drivers in the correct order | Dell US

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