So for few years I was assigning P800 with couple MSA70 attached to it under xen 4.3/4.4 and recently 4.5. one day the server rebooted and now P800 gives me error 10 and io error. I tried P421 and it gives same error. The cards work fine under windows 2012 R2. I have no problem assigning usb 3.0 _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users