What I want to build with this is a firewall so I need constant and
good connection so I don't know if 2 USB network cards will be good
for the job. Now I'm using a USB network card but only for retreiving
web site and small files.
I don't know if this exist. A PCI raiser with two PCI slot. Maybe someone
has done the job described by kray and try to sell the product.
A PCI raiser with only one PCI Slot is less than 7$.
I will still have to do some soldering but this is better than nothing.