Question about Gateway Dx4850-45 Desktop Pc

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Replace power supply

I was going to replace the power supply on this machine and when doing so I noticed that there is a little plug coming out of the power supply that when pulled apart looks like it has two little clear prongs coming out of it and it seems to lead to the blue ray drive I don't see one on the replacement power suppy or where I could hook this in to the power supply I was wondering if you could tell me what this plug is Thank you

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