Pre-installed in the Power Macintosh 8500 Series in countries that use the PAL television standard. It works behind the scenes as part of your system software. The Power Macintosh 8500 can detect whether or not a television is plugged in, but is not able to determine if the television uses the PAL or NTSC television standard. The system software normally assumes that an NTSC television is connected. This extension alerts the system software that it should assume a PAL television is connected instead.
