1.Compatible with Apl TV A1427 A1469 A1378 A1294 MD199LL/AMC572LL/A MC377LL/A MM4T2AM/A MM4T2ZM/A Mac Music System.2.Important: The remote control works exactly like the original remote, but cannot PARP/PLAY PPAR with Apl TV.3.If only one indicator light on the front of Apl TV flashes 3 times in quick succession when you click the buttons on the replacement remote, but no other response, it means that Apl TV has been paired with another original remote.4.Make sure your Apl TV has not been paired before, or disconnect Apl TV first, otherwise this replacement remote will not work.5..Mac Compatibility: Apl Remote requires a Mac with IR port (most Macs manufactured after 2005). FrontRow controls do not work with Mac OS X Lion or later, nor with iPod Universal Dock, for Apl TV.