I believe you are correct. You have to purchase a dongle from apple that plugs into USB and let's you plug in ethernet to hard wire an Air.
Giles ,'Same Time, Same Place'
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Ah. So I can't use a regular USB cord? What is the USB port thingy on my modem for, then? To plug into a router?
That is a good question. I don't know. Cable modem?
The USB port on a cable or DSL modem can be used for Internet. I've seen it done several times, but have not used it myself.
That is a good question. I don't know. Cable modem?
Yes, it's a cable modem.
So in theory, I could connect from my Air to the modem via USB? It's certainly an option in Network Preferences.
I'm going to stop pretending like I know what I'm talking about - I've never done it.
I would google for the modem manual, myself.
...duh. I think I have the modem manual. RTFM, smonster.
Okay, I RTFM and it's not helping. It only has troubleshooting for PC, not Macs. I think I'm going to contact my cable company. Thanks for the help, y'all.
You probably need to contact them anyways to get to the bottom of the problem. I doubt that your router is going to be problem if a wired link doesn't get you the speed you expect.
My home network has been connecting slowly to the internet for some time, in spite of reboots. To see if it was the router, I unplugged the router and plugged one computer directly into the cable modem. Speed was fine. I then plugged the router in again and connected through the router. Still working fine. "Fucking Ethernet, how does it work?" /insane clown posse.