On Windows operating systems before Windows 2000, and on some current Linux builds, you need an audio cable to get CD audio output from the drive to the system. This cable has all three of the most common audio connectors for CD-ROM/DVD drives and audio cards, including the MPC and MPC-2 (aka MPCII) plugs, making it the perfect choice when you aren't 100% sure of the connectors you need.
Note: Windows 2000 added an option that allows you to "Enable Digital CD Audio", obviating the need for the separate audio cable. From Windows XP onwards this option has been the default, so no additional cable connection is required for these operating systems.
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