EK-AC GeForce RTX 3090 Backplate is a CNC machined retention backplate made from black anodized aluminum for the EK-AC GeForce RTX 3080/3090. The backplate covers the whole length of the graphics card's PCB, serves as an aesthetic add-on, and also provides passive cooling for the backside of the voltage regulation module (VRM), the GPU core, and VRAM on the 3090 cards. This backplate is guaranteed to be compatible only with Zotac Trinity RTX 3090 graphics cards.