Your question seems to be about a a piece of gear primarily aimed at consumers. Which is why it got some close-votes here.
Your question probably would have been closed on a site suggested by that area51 proposal, since that proposal also seems to be aimed at professional gear.
It probably would have stayed open on superuser, though I am sure it is a duplicate of some question that already exists on ether serverfault or here.
You are also questioning the existence, of an extremely common device. I think it would be extremely difficult to find a consumer 'wireless router' that doesn't have a few spare switch/hub ports. Almost every 'wireless router' sold recently is a wireless bridge, a wired switch, a router, with a NAT firewall, all the done in the installed firmware. Such a basic question doesn't really fit very well with the professional system administration focus of serverfault.