You can remove USB devices from a client computer if you do not want those devices to be available to virtual machines.

When you detach a USB device from the remote client, the device disconnects from the virtual machine. Ensure that data transfer is not taking place before you remove the device.

Verify that the devices are not in use.

To minimize the risk of data loss, follow the instructions to safely unmount or eject hardware for your operating system. Safely removing hardware allows accumulated data to be transmitted to a file. Windows operating systems typically include a Remove Hardware icon located in the System Tray. Linux operating systems use the umount command.

You might need to use the sync command instead of or in addition to the umount command, for example after you issue a dd command on Linux or other UNIX operating systems.

When you remove the device from the client computer, it is no longer available to virtual machines.