User`s guide

Configuring a Virtual Machine 141
USB Settings
On the USB Controller pane of the Virtual Machine Configuration dialog, you can enable the USB
controller support in your virtual machine. A virtual machine can emulate only one USB
controller, which provides you with the possibility to connect up to eight USB 2.0 and eight
USB 1.1 devices to the virtual machine.
Enabled. Select this option to allow using USB devices in the virtual machine. If you want to
temporarily disable USB operations without deleting the USB controller from the virtual
machine configuration, clear this option.
If the USB controller is disabled, such USB devices as keyboard, mouse, microphone will still
be available to the virtual machine with other emulated subsystems, such as sound, keyboard or
mouse emulation, etc.
Note: The Enabled option can be selected or cleared only when the virtual machine is stopped.