Cabling not marked for LANCOOL 215

I have a technical question on the power switch and reset switch cabling for the LAN Cool 215.  It does not say on the cable which is positive or negative.  In the documentation it shows the cables as black and white, in actuality both are black and there is not + or - on the cable.   I tried to contact Lian LI but their website does not work.  I wonder if Microcenter rep sold me a product where the builder went under and did not tell me?  


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