The best replacement for data card is broadband.

The best alternatives to data card are rated as following:
★★★★★  broadband
★★★  3g dongle
★★  usb modem
★★  3g mobile
  evdo
  tata photon
  dongle

Your alternative for data card is not listed? Suggest!
Speaking about data card, one probably shouldn't forget about sim.

Other search terms related to data card and their ratings are:
★★★★★ sim
You have in mind a companion for data card and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of data card in all years. Click on graph for more.
data card
broadband
3g dongle