Good afternoon! I apologize in advance for my English. I recently purchased the L009UiGS-2HaxD-IN, and my joy lasted until I installed the flash drive in my router. When I connect the USB 3.0 port to my router, all my Wi-Fi devices disconnect, making it impossible to work. I have read online that this is due to interference, and I have tried using extension cords with ferrite tips and a foil cap, but nothing seems to work. When I connect the usb 2.0, everything works fine, but this is not what I expected from purchasing the device.
Hi, could you provide the source of that statement? I see it for the first time. Isn't it an "AI" generated answer?
What if you connect other USB 3.0 device? Does WiFi stop either?
https://www.tp-link.com/in/support/faq/1393/
https://superuser.com/questions/1702030/how-to-avoid-usb3-0-interference-with-2-4-ghz-wi-fi-devices
I've tried different flash drives from different manufacturers, and m.2 adapters with a usb 3.0 interface, but I'm still facing the same issue.
It is very well known that USB3 ports cause interference on 2.4ghz. ZigBee USB adapters are often sold with extension cable. ZigBee also operates at 2.4ghz.
Is the flash drive recognized properly and does it work properly on the USB3 port?
Yes, the flash drive is recognized as 3.0, and there are no problems with it, and the data transfer speed is also excellent, but all my wifi devices are getting sad
shielded USB3 extension cable? But probably the interference source is the USB port itself.
Usually I would expect unreliable connections on 2.4ghz caused by the interference - not a complete disconnect of every device.
Yes, I'm using an shielded cable. The connection with the devices is not lost, but when I try to access any website, it loads indefinitely
We learn all the time.
How the USB drive is placed? How antenass are postioned against USB drive?
It would be strange that there was no same scale problems since the lounch of that model.
It could just a flaw in internal connections. Case is a Faraday's cage, so there should be no internal interferences.
Creative solution: HAPax3 WiFi 2GHz Interface Not Running - #11 by diasdm
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An interesting fact is that the same flash drive does not cause any problems when connected through an adapter that makes it work as a USB 2.0 device.
Changed something with wifi inteference or not?
No, I still can't open any websites on all devices connected to the router. I remove the flash drive, and everything starts working
https://www.usb.org/sites/default/files/327216.pdf
See mitigation methods. Interesting results. Shielding the drive has not a huge effect.
The most interesting thing is that I am not the only user of the L009UiGS-2HaxD-IN in the world, and I am not the only one who connects a USB 3.0 flash drive to it.
I bought some aluminum foil and will try to protect the extension cord even more. I will write to you in the evening.
Who knows how many people actually attach USB flash disk to a router? 
I think that one of the 8.26 billion people has the same router and tried to do the same thing as me ))))
One of these 8 billion owners solved it: https://www.icy.lt/post/usb-3-wifi-issues/