How card use? Superfluous?

Users questions:I bought a computer and sent to 100 MB card. But I am on the ADSL ah, how to use this card do? Are two ways the Internet is good? ?
Experts answer: ordinary ADSL connection ADSL modems use the card and the computer, but now most of the computers on the motherboard integrated card, so send a cardUseless. But I am surprised when you buy a computer to send business cards, Can you buy a computer motherboard is not an integrated card? Look at the back of the computer have any network interface (in the box above, USB port areas), if not, should be loaded onto card.
  • This information provided by the users.Thanks!