Ralink 150N wireless adapter User Manual page 27

And here are descriptions of every setup item in setup area:
Item Name
Sorted by >>
Show dBm
Rescan
Add to Profile
Connect
Description
You can decide how to sort all listed access point
by 'SSID', 'Channel', or 'Signal' (signal strength).
Check this box to show the signal strength of
access point, instead of percentage.
Click this button to rescan access points. You can
click this button for several times, if the access
point you wish to use does not show in the list.
You can store a specific access point to profile, so
you can link to that access point directly next
time, without inputting authentication key again.
To add an access point to profile, you have to
select an access point from the list first, then click
'Add to Profile' button. Detailed instructions will
be given below.
Connect to a selected access point. You have to
select an access point from the list first and then
click 'Connect' to connect to the selected access
point.
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