PS C:UsersAdministrator> Dismount-VMHostAssignableDevice -force -LocationPath "PCIROOT(0)#PCI(1B04)#PCI(0000)"
Dismount-VMHostAssignableDevice : The operation failed.
The current configuration does not allow for OS control of the PCI Express bus. Please check your BIOS or UEFI
settings.
At line:1 char:1
+ Dismount-VMHostAssignableDevice -force -LocationPath "PCIROOT(0)#PCI( ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [Dismount-VMHostAssignableDevice], VirtualizationException
    + FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.DismountVMHostAssignableDevice

Manufacturer           Product                        Version
ASUSTeK COMPUTER INC.  ROG MAXIMUS X HERO (WI-FI AC)  Rev 1.xx