It is not a good idea to run your firewallrouter and a fileserverNAS on the same box . Far to easy to make a security nightmare . If you must use the same physical box use virtualization to separate them . Most WiFi cards used as APs do not perform very well andor have limited range compared to proper APs . You probably won ' t be happy with the performance . Unless you have separate networks there is no need for more than two wired interfaces . Just get a cheap switch for the LAN side . Even basic managed switches with VLANs are quite cheap now . There is no point wasting CPU power on layer 2 bridging . nbspIf you just want something that can keep up with gigabit and is low power then an Edgerouter Lite fits the bill . Add a proper AP and switch and your network side is done . Then you can either keep using your Zotac as your fileserver or upgrade it to something suited to being just a fileserver . If you want something PC based as your router then you don ' t need anything that powerful . The 2 nd gen Atom CPUs can keep up with gigabit if you pair them with decent NICs . Almost any i series CPU can do gigabit even with crappy NICs .