Problem The Plantronics Calisto BT Adapter that was supplied with Dragon Dictate or MacSpeech shows no lights when plugged into a USB Port on your Mac. You may have tried other ports and devices which work. The Bluetooth headset is undetected in the software. Solution Reset the PRAM / NVRAM.
Apple Bluetooth Keyboard won’t pair with iMac
Problem The keyboard light is constantly blinking and when searching for the bluetooth keyboard it says that it was unable to be found. Solution Replace the batteries in the keyboard as they may be poor quality or have low power.