Intranet computers can't insert U disk slogans.

U disk is not registered in public security intranet, and it is damaged.

1, USB flash drive is not registered in the public security intranet: in the public security intranet, all devices need to be registered before they can be used. If the USB flash drive is not registered in the public security intranet, it will show unregistered.

2.USB driver is damaged: USB driver is software to realize communication between computer and USB device. If the driver of USB flash drive is damaged or lost, the computer will not recognize USB flash drive and display unregistered.