Just bought a Refurb 2011 Airport Extreme and a "used" (not really) Express 2d gen from someone whose printer was not compatible with it (?). Installed one in one house and one in the other. Upgrading from old 802.11g Linksys routers. Each time, it took more time to remove the old routers from the mess of wires than to unbox, plug in, and set up each Airport router. That's all. I'm very impressed!