Usb Wireless Network Card If A Netbook Has USB, Wireless Network Card Is That The Same As Wifi?

If a netbook has USB, Wireless Network Card is that the same as Wifi? - usb wireless network card

YES.

But just incase you have something in mind, you can use a USB modem that connects to an antenna, which offers more features than a NIC. Since the network adapter glued to the computer. In addition, the NIC is a little more convenient because it fits into your laptop and do not really stand out (at the expense of the range is)

The second thing to check is the protocol at high speed. First it was 'a' then 'B' from 'g', then 'N' where N, there is more speed and "at" the lowest.
So if you buy a card / USB Wifi to ensure, it says a / b / g / n or / b / g or more wills.
I hope this helped some.