Hi Yuri,
Must the Ethernet cable be crossover or not? Or it doesn't matter (some devices understand what kind of cable it is)?
If your computer has Gbit ethernet, it doesn't matter, those are required to be auto MDI-X. I can't remember if the Galileo has that, but only one of the devices need to support that.
A crossed cable will always work through, also with old hardware.
/Thomas