I am using a SMC2336W-AG which works with a limitation.
Each time I powerup I have to go into the network settings select my ssid and select use and go out off the settings menu,the led is yellow then off the connection.
Then I repeat the same.led goes green,do the same one more time and then I am online.
I tried just rebooting and wait for half an hour but led stays yellow only thing which helps is procedure above.