What is a sound Card:
is an expansion card which is used to produce sound on a computer which can be heard through speakers or headphones. Some computers dont need a sound device to function however they are included on every machine either in an expansion slot or in built into the motherboard.
White/Yellow: Used with surround sound or loudspeakers.
Blue:Connection for external audio sources some examples would be tape recorder, record player, or CD player.
Pink:The connection for a Microphone or even Headphones
Green:The primary sound connection for your speakers or headphones.
Best Sound Card: Asus Xonar DSX PCle 7.1 £57.60
the Asus Xonar DSX PCIe 7.1 sound card is perfect for both movies and games.
Best Budget : Asus Xonar GHX PCle GX2.5 $40