Product Material : This heat sink is made of high-quality acrylic board, with strong permeability, durability, and is aesthetically pleasing and lightweight Product Size : 8.97 inches wide and 8.97 inches long;Adapt for most MAC Mini devices Product Details : Large area hollow design enhances heat dissipation performance, and the four corners of the base are equipped with anti slip and shockproof bases to ensure equipment stability Strong Wind Dissipation : This Mini Fan built in with a 5.5 inches ultra quiet fan,And this fan can be adjusted in speed and the fan speed can be freely controlled;it can quickly cool down your MAC Mini host, reduce lag, and improve efficiency Package Includes : 1* Heat Sink 1*USB Power Supply Line With Speed Controller