I designed this to screw into the empty PCIE GPU slot above my graphics card in my computer, it's a pretty snug fit for me but might require a little tinkering for your own personal use.

Honestly, it's not the greatest thing thermally to have this above a graphics card, as it tends to deform from the heat. But it still looks cool!

It should fit in most cases depending on the style/length of the PCIE bracket.