Return To Castle Intel: 16 Years Of Motherboard HistoryLooking behind the board, it’s a little miracle--the birth of motherboard integration. Forget those Super I/O cards. Now we have integrated serial, parallel, and game ports. Remember 15-pin game ports for joysticks (support for these disappeared under Windows Vista)? Under the game port, behold—three audio jacks fueled by a Crystal Semiconductor ASIC mounted under the third and fourth PCI slots. In the bottom-right of the image below, you can also see the four-wire audio header for connecting to the CD-ROM so systems could play music discs.
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