I had to replace the keyboard (connected with USB on my iMac). The replacement is the exact same keyboard that I had before.

There is an issue though. The Function Keys are in the wrong places. Through the Keyboard Preferences, I am able to adjust the Brightness Keys, Mission Control Key, and Launchpad keys, but I am unable to adjust the Play/Pause, Forward, Backwards, Mute, Volume buttons and the Eject button.

I tried updating software, and it tells me I am already up to date.

How can I make it so those keys work properly???