Seems I remember some having a short of such doohickeys when a USB cable end was inadvertently put into an Ethernet port. Someone let the magic smoke out of those.
Sorry to see a couple of fried components. They appear to be surface mount resistors. I would think you'll most likely need to send your axefx in for repair.
I've done that myself.
They turned it around for me really quick and it didn't cost much to fix it
Another great way to show you care is to send me an FC-12. I would know you reeeeeaaaallllyy care about me then...Charlie genuinely cares about Fractal Audio and its customers. We all do.