I'd say you may need a switch, router and an AP. This depends on where your cable enters the house and your modem is placed. The basic connection sequence will be PC to switch to router to modem to outside cable. The switch will connect to one LAN port on the router and all wired devices can connect to it or other free ports on the router. IP addressing from the router can pass through the switch. Since you want the major hardware in the basement, your wireless radio device should probably be an AP. The AP can connect to the switch or a free port on the router. In this case, your router doesn't need to be of the wireless type but might be handy if you bring a laptop into the basement. Two wireless radios do add extra steps, however. You said you need 20 ports. You'll find switches that offer 16 and 24 ports so you'll go with 24. The four on your router add two more for a total of 26 possible terminal connections as one switch port and router port will be connected. If you want to go gigabit capable, you'll need to make sure that your switch and wiring are proper. In wall wiring should be Cat6 (though Cat5e may work) and so must patch cables to all devices capable of that speed. The router speed won't matter and neither will the AP as these only provide WAN connections and you won't see gigabit to/from there. Hope this helps.
I'd like to know what I need to do to wire my home.
I'd like each room of my house to have an ethernet jack where I can plug into my local network AND connect to the Internet. A standard router only has 4 ports and I need many more ports (i.e. 20) than that. A switch has many more ports, but I've read that switches are only good to connect to a network; they aren't good to connect the devices to the Internet.
My internet comes from a cable modem. Ideally I would like to connect all the wires to a central (1000Mbps capable) switch/hub/router in my basement (so all the wires are kept out of sight). Whatever is used as the central hub, I'd like to connect my cable modem to that device. (I don't want to use a computer has a gateway.) I'd also like to make sure my wireless router (used for my laptop and other wireless devices) is kept on the 1st floor for easy access and better reception.
So what combination of routers, hubs, switches, cable modem, etc do I need to wire my home?
p.s. the wired devices I would like to connect are: 2 or more desktop computers, 2 networked HDHomerun dual TV tuners (potentially more), printers, game consoles, Media Center Extenders, Internet capable TVs potentially in the future, maybe a home server in the future, possibly more devices that have yet to be created at this time.
Thanks in advance for the help.