FiberOptic into the house, ethernet converter in the basement. THat runs up to a wireless router downstairs. I've got a wireless extender upstairs that is has a wired connection to the desktop computer and wireless connections to my several laptops. The laptops all work fine. The desktop network connection is constantly/sporaticly activating and deactivating. It does so in all the Linux distro's I've got installed. The motherboard has Realtek NIC built in and that's the interface I'm using.