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