User Manual
Page 32
.... To learn about Do this Using Bluetooth wireless technology Go to the Specifications page at support.apple.com/specs. Or open System Profiler by choosing Apple (K) > About This Mac from the menu bar, and then click More Info. Apple Remote (sold separately Search for "USB" or "FireWire" in the Utilities folder within the Applications...
.... To learn about Do this Using Bluetooth wireless technology Go to the Specifications page at support.apple.com/specs. Or open System Profiler by choosing Apple (K) > About This Mac from the menu bar, and then click More Info. Apple Remote (sold separately Search for "USB" or "FireWire" in the Utilities folder within the Applications...