I am using keyboard K260 Logitech that connect with iMac and I would like to adjust the brightness what button?

Question

I am using keyboard K260 Logitech that connect with iMac and I would like to adjust the brightness what button should I use for that ? 

There is another issue that require the me that is "eject" button that is missing from the regular keyboard layout. How can I remove the "CD" with normal keyboard.

Bob · Accepted Answer

Hey, that is a great question, I hope this information helps.
  Ask Apple here for free 
1-800-MY-Apple ,and...
       Check out the sites for more information.
     https://discussions.apple.com/index.jspa
     http://www.apple.com/contact/feedback.ht… 
     http://www.macworld.com/ http://www.apple.com/support/ and
     https://discussions.apple.com/thread/2468023?start=0&tstart=0 
     http://www.apple.com/macosx/recovery/
     http://appleid.apple.com
     http://www.apple.com/support/mac/facetime/
     http://www.ifixit.com/iPad-Parts and Mac parts 
       http://store.apple.com/us/product/MC573Z…
      If you have tried all these and you are still having problems take it to an Apple Store, or an authorized service provider. If you are within your manufacturer warranty period they may be able to exchange the defective charger, adapter, cable, or unit (it depends on what is actually causing the charging issue.)
 

     Source(s):
    CompTIA A+ Certified Computer Professional

I am using keyboard K260 Logitech that connect with iMac and I would like to adjust the brightness what button?

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