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Found a piece of something on top of my psu from my motherboard

RushNReady

Honorable
Dec 30, 2013
323
0
10,790
hi there i just recently re wired my pc to hide them up better and gave it a clean and i found this on top of my psu guessing it fell off my mother board while re wiring any one know what it could be
 
Solution
Looks almost like the door for an optical audio port (#2 in the pic):

c01925490.jpg