Well - it offers support for graphic cards, sound card, networking cards, USB cards, TV cards and the like - what kind of support are you missing?
Its just that not all *products* from all *manufactures* that are available at the next computer shop aruond the corner are supported.
But if you buy your PCI cards according the compatibility list (that comes together with the mediator and is also accessible on Elboxes web page) there sould be no problems...
I believe we are talking about a Prometheus PCI busboard, not a Mediator.
