Dear All
I am new to XCP-ng and after a lot of research and digging around I managed to passthrough a very old PCI card on windows 7. I have now been struggling for 3 weeks to get this working in my Lab. I have run out of ideas. The PCI card is a PCMCIA Card that has two card slots. When I use the command "lspci" I can see 4 entries, if I pass the PCMCIA card the VM does not start but if I Pass the actual card itself, I can see it as Base System Device. When I go into Device Manager and install the drivers (given my the manufacturer using the CD), the installation hangs. I go into task manager and close the windows. I can now see the device with an Warning(Exclamation Sign) and the message "Device Manager can't start the device (Code 10)". I thought it was my PCI slot so I changed the slot, then I thought it might be the card PCI card itself so I installed it on a physical machine and the card works just fine. I have run out of ideas and on the verge of breaking the card into pieces 
Any help would be highly appreciated. From the little knowledge that I have I am suspecting that the card is not liking the Passthrough. Are there any other settings that I need to enable or disable or anything.
It cant be the drivers - Because it works on a Physical Machine
It cant be the PCI card - Because XCP-ng can see it using the command "lspci"
it cant be the PCI Slot - Because I changed the slots.
I have wasted a month troubleshooting and almost given up.
Appreciate any suggestions and help.
PS. I am not that great in xen linux so go easy on me