|Chances are Time Warner uses the same device for all their clients. While I'm not positive, it's likely they gave you what we call a "combo device" Which is to say, a device that's a combination modem, router, and wireless access point.|
If that's the case, and you don't have any wireless devices then I advise you to not enable a Wireless network (WLAN) in your home. If you plug your PC into a LAN port on the device, that will give you internet connectivity if everything is configured correctly.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.