I whant to use the arakattack + poseidon usb stack.
But i don-t understand if i could use it whit any usb pci card
How to configure them ?, and how to use the pci cards whit openpci.
In principle all PCI USB cards work, you don't have to get a "special" dongled PCI card. I would recommend to take a standard 5EUR NEC USB2 card.
But: it won't work in this configuration. All Prometheus board out there lack the ability to either operate PCI masters at all, or they have a bug inside which causes system failure at random basis.
The only cards working in non-upgraded Prometheus boards are GFX cards and 10MBit ethernet.
There will be an upgrade offer soon... I'm working on it :-)
Michael