This device can perform faster
(screenshot below). When I click it, I get a message about USB host controller (screenshot below).Insert Guest Additions CD image..
which should auto-start the application, if not, navigate to the optical drive in My Computer and right-click and select Auto-play
or open the drive and run VBoxWindowsAdditions
to run the Guest Additions Setup Wizard. This will install all the VirtualBox device specific drivers to your VM. A reboot of the VM is required after installation.