Have you looked at the back of the tower? If indeed your system has a 5.1 sound card then there should be sockets with the corresponding colours to which you plug into. If not then you need a new soundcard
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D&AD Awards 2017: see the best design, advertising, illustration, animation and VR of the past year
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Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.