My router stopped seeing usb flash and not see the USB modem.

Hello!
I use Mikrotik hap ac lite (rb952ui-5ac2nd) .
At the moment I have firmware 7.5 stable.
My router stopped seeing usb flash.
Also, the router does not see the USB modem either.
Below are screenshots of the menu System → Disks, System → Resources → USB.

Earlier, I turned on the modem mode on my smartphone and connected the phone via a USB cable to the router, and LTE (3G modem) was immediately detected in the router interfaces.

I reset the settings to default, installed an older firmware (routeros-mipsbe-6.42.6), but nothing helped. The router simply does not see the USB port as such. How can this be? USB port issues 5.08 V.

Please, help me.
1.png
2.png
3.png
4.png
5.png
6.png