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How to connect the speaker cable of computer 5. 1? The computer is an old computer k7060a and the speaker is an innovative csw4200. There are three cables, green, yellow and black.
Red must be headphones (for talking to others or recording)

Green is definitely sound output (you can connect stereo headphones or 2. 1 stereo).

Black-and-gray audio, hehe, you can use 5. 1 or 7. 1 channel speakers, but you should also set them in the sound card options of the system!

My home has a 5. 1 speaker, which is connected with black and green.

Blue, usually connected to a tape recorder or CD player, can record MP3 with good sound quality (for example, school educational tapes can be recorded in computer format and played on the computer).

That's it. In short, usually you just need to pick up the green one, and if you want to talk, pick up the red one!