Magma (and others, e.g. Startech) make ExpressCard-to-PCIe expansion chassis that a Fibre Channel card will likely work in.
Magma ExpressBox 1 ($829) is single lane PCIe 1.1 solution with a 2.5Gbs (250MB/s) bandwidth. Fibre Channel supports speeds higher than that, so the first question is, will that bandwidth of 250MB/s work for the task?
The second part will be to figure out if the Fibre Channel card will in that chassis. Generally it should.
Systems Engineer DV411 - Los Angeles, CA