The External CD Sound extension lets users connect an external CD-ROM drive to the Macintosh 630 family, Power Macintosh 5200/75 LC, Performa 5200, and Performa 6200 series of computers and play audio CDs through their internal speakers. Without the External CD Sound extension, you are able to select the external CD-ROM drive using the AppleCD Audio Player, but you do not hear the audio. The External CD Sound extension solves this problem. Note: If you want to hear the audio from the external CD-ROM through the internal speakers of the Power Macintosh 5200, you need to use a Y-Adapter cable (not included with the Power Macintosh/Performa) to connect from the external CD drive's RCA audio jacks to the Sound In (Microphone) jack on the back of the Power Macintosh or Performa 5200 computer.
