why buy a cable modem? Here in Tampa one is issued to you when you sign up for the service along with a 3Com NIC. Time Warner is responsible for it and replaces it if it goes out or gets flaky. They do not offer a discount for cable modem owners as it is a bigger headache than if you had their modem..
Never understood the cable modem ads, almost makes it out that all you have to do is buy the modem and you'll get "free" monthly service, which ain't the case.
if you buy, don't buy USB. Use a NIC
gl