Wireless needs to be set up. First check that it has the proper driver. I
type: sudo lshw -C network in a terminal (you can leave out sudo & get an
error message that you can ignore) and see if the card is detected properly.
I am assuming it is properly detected and is available for use. Then go to
Setting, System Settings, Networking and Connectivity, Network Connections.
You can also right-click on the network icon in the system tray/
notification area and choose Network Management Settings. Click on Wireless
tab and Add. You will have to enter the SSID and your wireless security.
Click on connect automatically if that is your wish. Thereafter you should
be able to manage it from the system tray.

If you do not have a driver you can install one in System, Additional
drivers or the worst case scenario is to install one manually. I do not have
that adapter so cannot comment on it specifically.

See: https://help.ubuntu.com/community/WifiDocs/WirelessTroubleShootingGuide
https://help.ubuntu.com/community/WifiDocs/WiFiHowTo

Installing wireless in Kubuntu is not much different than in Ubuntu. Things
are just in different places and called different names. If the wireless
driver works in one it will work in the other. It is related more to the
kernel than anything else.