This is a common problem w/ these WAN miniports. They're usually installed w/ the network adapter drivers, or perhaps by other software that uses the network adapter (e.g., AOL). Unfortunately many of these installers fail to remove it when you uninstall the same item. Sometimes you can just delete them manually, sometimes you can’t. But if you leave them there in device manager, they normally do no harm. In fact, if you want to simply eliminate the yellow exclamation point, just disable it and it will be X’d out.