my macbook pro does not recognize my external speakers after Yosemite update
After updating to Yosemite 10.10.2, my macbook pro does not recognize my Bose Companion 5 speakers. It only gives me the option for internal speakers when I look in Sound under System Preferences. I've tried different usb ports and cords. Any help is much appreciated. I have also recently purchased an apple-tv, so I don't know if that would affect it or not.
MacBook Pro