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Just like connecting to the Internet with a wired add-in NIC, wireless add-in NICs are also available. These NICs plug into your laptop’s PCMCIA port and, of course, do not require an Ethernet cable to connect to your wireless modem or router.
These wireless NICs operate just like internal NICs. They requires drivers and sometimes other software to work and you must be sure that they are enabled before making a wireless Internet connection attempt.
For maximum capability with any of the wireless connections you may encounter, be sure your wireless NIC is capable of both IEEE 802.11g and IEEE 802.11b standards. These two wireless standards are the ones you will most likely encounter in homes, in coffee houses, at work, and in other hot spots in many large cities.