Edimax Technology EW-7711UAN, EW-7711UMN manual Here are descriptions of every setup item

Here are descriptions of every setup item:

Item Name	Description
Wireless mode	Display the wireless operation mode of the network card.
Enable Tx Burst	Check this box to accelerate the data transmit rate. It may not
	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
Fast Roaming	network card should switch to another wireless access point with
	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
Show	authentication server, a dialog window with the process of
	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
	Centralized Key Management), which enables wireless clients to
Enable CCX	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
	connecting to CCX-compatible access point, check this box to
	enable measurement on unused radio channels to improve
	wireless connectivity.

After you finish the settings, click ‘Apply’ to apply new settings.

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