Hello, I have had great success with both ESXI and unRAID passing through a USB controller to VMs using the Buffalo IFC-PCIE2U3, which is a simple dual port card powered by a single Renesas µPD720202 surface mount. Now you can imagine physical PCI-e ports can disappear quickly if you want to pass-through such native USB controllers to multiple VMs. What I have been looking for is a quad-port four-controller USB (3.0 or 2.0, just want some I/O) PCI-e card that can be split into four differe