ocir Posted December 30, 2011 Share Posted December 30, 2011 just got the k90 are all the f keys backlighted my f9 to f12 have no light they blink a few times and thin just stay off Link to comment Share on other sites More sharing options...
Wired Posted December 30, 2011 Share Posted December 30, 2011 RMA it to the store or to Corsair. Link to comment Share on other sites More sharing options...
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