Edimax EW-7722UnD User Manual page 42

Here are descriptions of every setup item:
Item Name Description
Select the wireless operation mode of the network card. When
„2.4GHz‟ is selected, the network card can be operated in
802.11b/g/n wireless networks. When „5GHz‟ is selected, the
Wireless mode
network card can be operated in 802.11a/n wireless networks.
When „2.4GHz + 5GHz‟ is selected, the wireless network card can
be operated in 802.11a/b/g/n wireless networks.
Check this box to accelerate the data transmit rate. It may not
Enable Tx Burst
work with all wireless access point and wireless devices.
Check this box and the configuration utility will adjust TCP window
Enable TCP size automatically to get better performance. It should be safe for
Window Size most of wireless environments, but if you found some problem on
data transfer, uncheck this box.
Check this box and you can control the threshold that the wireless
network card should switch to another wireless access point with
Fast Roaming
better signal quality. Only adjust value when you understand what
it means and you need to roam between multiple access points.
When your computer is being authenticated by wireless
authentication server, a dialog window with the process of
Show
authentication will appear. This function is helpful to find out the
Authentication
problem when you can not be authenticated, and you can provide
Status Dialog
this information to authentication server‟s administrator for
debugging purpose.
Enable Cisco Compatible eXtensions. CCX is a wireless feature
developed by Cisco used to improve the wireless performance
with CCX compatible wireless devices. Check this box if you need
to connect to CCX-compatible wireless devices. When you
enabled CCX, the following setup items will become available:
Turn on CCKM: Check this box to enable CCKM (Cisco
Enable CCX
Centralized Key Management), which enables wireless clients to
roam between CCKM-enabled access points in very short time.
Enable Radio Measurements: When you‟re connecting to
CCX-compatible access point, check this box to enable radio
measurement function to improve wireless connectivity.
Non-Serving Channel Measurements Limit: When you‟re
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