prometheus is attached to the daughterboard, so you need an a3000T or an a3000D in tower. you can add pci vga as voodoo, soundblaster 128 or live, realtech network card, probably but not sure yet cheap usb card (depends on the openpci software).
in general, prometheus have some dma problems so not all cards working ok with it. recently
e3b has been in charge to update the firmware and solve dma probs.
post