Hello all. Please forgive me if this is covered officially somewhere, but my google-fu has been unable to help me find much recent information. I have a couple of devices (RTL SDR's) that require USB 2.0, but the pass through seems to only support a virtual 1.1 hub for devices. The devices are correctly recognized and configured by the hypervisor host, but when connected to a VM, they show up on a 1.1 hub, and the driver fails to load as a result. I have found some older information that only USB 1.1 devices were supported via USB pass through. I haven't found much newer information, though, and also couldn't find newer problem reports. I'm running 4.1, upgraded from a 4.0 installation, on Centos 7. I was hoping to build a little RF capture and analysis cluster using several of these devices, but this is a bit of a roadblock! Any ideas? Jonathan -- Sent from my Commodore64