unknown part

mechBgon

Super Moderator<br>Elite Member
Oct 31, 1999
30,699
1
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The square fitting in your picture needs this: ATX12V cable.

The six-pin PCI-E plug would go into a receptacle on a high-end PCI-Express video card, sort of like in this picture: power cable --> card

From the sounds of things, you might benefit from the photo guide those pics are from.