where exactly? on GPU? how ?That is an RGB LED decoration for your PC. It plugs into an RGB header. Some gaming motherboards include RGB headers.
it looks like it might clip on to the graphics card, along the top of the card.
Personally I would throw it in the trash.
I looked it up. It's actually a plastic anti-sag bracket. You install it below the gpu.
Might be worth keeping in case you need to move the PC. Would be good to protect it a little in transit.