Documentation Link (4.0 beta): https://access.redhat.com/documentation/en/red-hat-virtualization/4.0-beta/virtual-machine-management-guide/42-configuring-usb-devices The current list: Client Red Hat Enterprise Linux 6.0 and higher Red Hat Enterprise Linux 5.5 and higher Windows 7 Windows 2008 Windows 2008 Server R2 Guest Red Hat Enterprise Linux 6.0 and higher Red Hat Enterprise Linux 5.5 and higher Windows 7 Windows 2008 See email thread for the updated list.
3.6 Documentation Link: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.6/html-single/Virtual_Machine_Management_Guide/index.html 4.0 Beta Documentation Link: https://access.redhat.com/documentation/en/red-hat-virtualization/4.0-beta/single/virtual-machine-management-guide#sect-Configuring_USB_Devices