The ARGB controller allows users to switch LED modes, LED colors, and lighting speeds when using a motherboard without a 5V addressable RGB header. 120mm AR G B Radiator Fan - High-static pressure fan design delivers impressive cooling performance. High Efficiency Radiator - Specially designed 120mm large surface radiator increases surface delivering exceptional heat dissipation. High Performance Waterblock - The high performance copper base plate accelerates heat conductivity Highly Reliable Pump - The good quality and reliable pump enables maximum water circulation, keeping the copper plate continuously cool.