How to assigning a flash memory to a live VM

It is possible via the Monitor tab of the VM in the Proxmox web GUI or qm monitor on the Proxmox console/command line. I'm not sure of the exact syntax of the command, but you could use something like this: device_add usb-host,bus=xhci.0,hostbus=BUS,hostport=PORT,id=ID (replace BUS, PORT and ID with the physical USB-bus and USB-port (see lsusb) and whatever you like to use as ID. Use device_del ID to remove it again). Maybe you can find a guide or script by searching for QEMU Monitor USB hotplug?
 
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