EK-Velocity sTR4 is the 3rd generation of CPU water blocks that are tailor-made for AMD® Ryzen™ Threadripper™ processors. The primary goal in designing the new EK-Velocity sTR4 water block was to cover the entire IHS of HEDT AMD® Ryzen Threadripper processors and to improve performance over the previous generation of sTR4 water blocks.The top is made from CNC machined glass-like Acrylic material. Every EK-Velocity sTR4 water block comes with a precisely machined copper base (cold plate) which is made from purest copper available on the market and is treated with nickel electroplating.EK-Velocity sTR4 comes with a pre-assembled error-preventing mounting mechanism that is installed directly onto the SocketTR4 mounting holes. The result is a perfect installation. This also means the water block is out of the box compatible with AMD’s server type Socket SP3 motherboards. With such a mounting solution, the user does not need to remove the motherboard from the case and so has a hassle-free installation.This product is compatible with popular RGB sync technologies from all major motherboard manufacturers. The arrow marking on the 3-pin LED connector is to be aligned with the +5V marking on the A-RGB(D_RGB) header. You can also remove the LED strip cover to replace the LED strip with some other type of LED strip.CPU socket compatibility:- AMD SocketTR4 (Socket SP3r2)- AMD Socket SP3Enclosed: - EK-Velocity sTR4 D-RGB Nickel + Plexi water block - TIM / thermal grease: EK-TIM Ectotherm (1g)PLEASE NOTE:The use of specifically engineered coolants that contain corrosion and scale inhibitors is mandatory to prevent damage to your nickel plated water block! A backplate is not included or required.This product should NOT be installed with any aluminum Fluid Gaming parts. Model: 3831109810286