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A personal computer that resides in one location with its core components inside a case separate to third-party peripherals required for operation, such as a mouse, keyboard, and monitor.

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Why are there so many audio hookups on my computer?

On the back of my desktop computer there are 4 different colored audio jacks. What are all of these for?

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They're for different audio products. For the most commonly used ones, in general (but not always), the pink jack is the input jack for a microphone and the green jack is the main line-out jack for extraneous audio devices / control devices such as amps, speakers, or headphones.

The other colors are for more specific / specialized devices, and the jacks included depend on the motherboard the computer has. Two more jacks include the black jack for a rear speaker and the orange jack for a subwoofer.

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