It's different speeds. The WIFI standard is currently 802.11b which operates at maximum 11Mbps.
If you want to learn more do a google search and you will find more detailed info. Here is a short comparism of the different standards: http://www.webopedia.com/quick_ref/WLANStandards.asp
802.11g is much faster but the Federal Government hasn't officially set its standard--but soon will. 802.11g is backwards compatible with 802.11b which is the current standard.
Many manufactures have released 802.11b/g access points and network cards ( NICs ) with the expectation of being able to release a firmware upgrade once the final standard is set.
I have a Netgear WGR614 router\access point that runs in a "B Only" or " B and G " mode. My Netgear MA701 CF network card is 802.11b and works fine with it. There are lots of 802.11g NICs for laptops and workstations, but I have not yet found an 802.11g CF NIC for the AXIM. Hopefully this fall.
If you're thinking of buying, why not get a combo card? Cards supporting a, b, and g are becoming available. a is the fastest, but has the shortest range (~10 meters). b is slower, but certainly adequate, but has great range. g is compatible with b. If both sides support g, you can generally get better speed (but not as fast as a). However, g is the newest out there and, as root said, it is pretty new and there are some shakedown problems.
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Originally posted by commoved If you're thinking of buying, why not get a combo card? Cards supporting a, b, and g are becoming available. a is the fastest, but has the shortest range (~10 meters). b is slower, but certainly adequate, but has great range. g is compatible with b. If both sides support g, you can generally get better speed (but not as fast as a). However, g is the newest out there and, as root said, it is pretty new and there are some shakedown problems.
actually, g is the same speed as a.
but imo, it's not worth the extra bucks for an 802.11a-compatible card, as there really aren't very many 802.11a networks available (one reason is, as you said, its shorter range means less probability of you picking it up)
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802.11a isn't limited to 10 metres range. Not sure where this message is coming from.
The IEEE defines the names. 802 is a group of standards committees that build LAN/MAN/WAN standards.
The 802.11 groups build standard for wireless LAN. So there is the 802.11 group which did the original wireless LAN standard, 802.11a group defined the 54 Mb/s 5GHz standard, 802.11b group defined the 11Mb/s 2.4GHz standard, 802.11g group defined the 54Mb/s 5GHz standard and of course there are others (802.11n, 802.11i, 802.11f etc.)
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