Solved: Fix for Unknown USB Device (Device Descriptor Request Failed... - HP Support Community - 5973953
![Intel xHCI USB 3.0 Controller – USB Passthrough with VMware Workstation 9 in Windows 7 | VirtualizationMaximus.com Intel xHCI USB 3.0 Controller – USB Passthrough with VMware Workstation 9 in Windows 7 | VirtualizationMaximus.com](https://virtualizationmaximus.files.wordpress.com/2013/01/intel-xhci-usb-host-switch-controller-iusb3hcs-inf-01.jpg?w=604)
Intel xHCI USB 3.0 Controller – USB Passthrough with VMware Workstation 9 in Windows 7 | VirtualizationMaximus.com
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BIOS with XHCI Hand-off (enabled by default) and EHCI Hand-off (disabled by default) (has 3.0 and 2.0 ports) : r/computers
![Intel xHCI USB 3.0 Controller – USB Passthrough with VMware Workstation 9 in Windows 7 | VirtualizationMaximus.com Intel xHCI USB 3.0 Controller – USB Passthrough with VMware Workstation 9 in Windows 7 | VirtualizationMaximus.com](https://virtualizationmaximus.files.wordpress.com/2013/01/intel-xhci-usb-host-switch-controller-iusb3hcs-inf-01.jpg)