Answers:
802.11, is the wireless local nouns introduce yourself (WLAN) standard and g/b is combination of standard while 3945ABG intel chipset for wireless nouns.
a short time ago call round this website
1.
http://en.wikipedia.org/wiki/802.11...
2.
http://www.intel.com/network/connectivit...
Both of them work pretty much impossible to tell apart as far as the research i did on them.
There isnt one. "3945ABG" Is the Intel Wireless adapter chipset, i reason. "3945ABG" is a 802.11 g/b ADAPTER.