And the update. Strange behavior. The configuration home page for the router shows nothing connected, but the sharepoint application shows the printer just fine. So...problem solved! And thanks, Fuzzy!
I'm a bit baffled why the router config page doesn't show the printer on the USB 2.0 port, but sharepoint sees it fine. That seems like an odd glitch in the way the router handles things.
Again, thanks for the assist!