Usb Pass-through

Hey guys,

I've got a strange situation going, and I'm stuck. I run Fedora 25, and I use KVM/QEMU to virtualize windows with PCI/GPU pass-through for games. Everything works pretty much flawlessly except I can't get my USB controller to pass-through. I can't just assign the devices since my keyboard is a logitech G15 with a USB hub and doesn't properly assign.

My motherboard supposedly has two USB bus controllers. One via Intel, and one AsMedia 3.1 (gen2). When I run lsusb -t to see a map of my ports on Linux it lists 4 buses but regardless of which physical port something is plugged into, it shows up under bus001. Even the ports that are labeled as 3.0 (gen2) on the outside.

It has its own IOMMU group and should pass through with no issues, and technically it does, but nothing ever shows up as plugged into it. On Linux or windows. Can anyone help me figure out what the deal is?

MSI z170a Gaming pro motherboard
Intel i5 6600k
32gb RAM (3200mhz)
256gb M.2
120gb SSD (passed through)
Nvidia 970 GTX (passed through)