TL;DR - skip to the second post if you just want to know how to convert from legacy PCI stubbing via Syslinux to the new point and click method in Unraid 6.9 --- At times you will want to "hide" devices from Unraid so that they can be passed through to a VM.   Unraid Prior to 6.7 In the past (pre Unraid 6.7) we would stub the device by adding a Vendor:Device code to the vfio-pci.ids parameter in Syslinux, something like this: append vfio-pci.ids=8086:1533 This worked