Some old legacy devices may not have driver support for newer operating systems (Windows Vista and beyond). Windows Virtual PC (WVPC) makes it possible to use these devices in Windows 7, using Windows XP Mode. Users can, at the same time, utilize benefits of newer and secure features of Windows 7. In this article, we’ll describe USB architecture in WVPC. Typical USB devices used in a Virtual Machine (VM) are: Printers; Flash memory sticks; External hard disks; Webcams and Digital cameras; Smartcards. Managing USB devices of Windows XP Mode and WVPC is very simple and straightforward. USB devices can be shared or even assigned to a VM. COM APIs can be used to assign-release devices or even creating applications for their own customized scenarios. We hope this information is useful to you.
Full Article: WVPC blog