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[BaNzaiDags]

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[daniel49]

near as I can figure your case has a device to monitor hardware called Musketeer I and it monitors fan voltage, audio sound pressure and the temperature of the thermal sensor

as stated here
http://www.coolermaster.nl/
and somehow acts as a media interface between motherboard and sound card?

that sound like what your looking at?

there are some diagrams here on page 5 that may help you?
http://www.coolermaster.com/installation_manual/Cavalier_manual_eng.pdf

gl