Features: 1.This CPU cooler is specially designed for Supermicro H11 generation 4U servers and workstations equipped with AMD EPYC 7000 series processors. 2.The radiator has been thoroughly tested and verified by for Supermicro to ensure quality and cooling performance. 3.This CPU cooler is durable, with large air volume, quiet and efficient heat dissipation. 4.The heat sink can effectively reduce the temperature generated by the CPU during operation. 5.The fan revolving speed is 3800rpm, low noise, stable and reliable performance. specification:Item Type: CPU Cooler Model: SNK-P0064AP4 Applicable Motherboard: For Supermicro H11 single/dual motherboard Socket Type: Socket SP3 Applicable CPU: AMD EPYC 7000 Series CPU Heat Sink Sound (dBA): 38dBA Speed (rpm): 3800rpm Size: Approx. 119 x 92.5 x 126mm / 4.7 x 3.6 x 5in Application Scope: 4U server/workstation platform Fan Connector: 4Pin Thermal Design Power (TDP): 180W Rated Voltage: 12V How To Use: 1. Before installing the radiator, please check that the radiator must be correctly aligned with the flowing direction of the system cooling air 2. According to the required air flowing direction of the radiator, adjust the position of the radiator mounting screw so that it can be aligned with the relevant nut bracket so that the radiator can be installed on the stiffening frame. 3. Remove the thermal interface material (TIM) or thermal grease protective cover. The required amount of TIM has been pre-applied on the bottom of the heat sink. Check the pre-coated TIM for damage. 4. Place the heat sink directly on the top of the CPU so that the four heat sink mounting screws are aligned with the four heat sink mounting studs or nut brackets on the slot reinforcement frame and fixed on them. The radiator must be correctly aligned with the flowing direction of the system cooling air. Please note that when tightening the four radiator mounting screws, do not install the radiator cooling fan on the radiator body. 5. Use a screwdriver with a Star T20 drill bit and adjust the torsion setting of the screwdriver to 16.1 kgf-cm (14.0 lbf-in). Before opening the screwdriver, make sure that the screwdriver bit is fully inserted into the hole of the heat sink mounting screw head. During the installation process, keep the heat sink mounting screws vertical. 6. Tighten the two diagonal radiator mounting screws, and rotate the screws 1 to 2 turns until they fit snugly. Do not tighten completely! Then, do the same with the remaining two diagonal heat sink mounting screws. 7. Make sure that the bottom of the radiator is correctly placed on the CPU and prevent the radiator from titrating. Please fully tighten all four heat sink mounting screws to complete the installation. 8. Install the radiator cooling fan and bracket assembly to the radiator body, and then tighten the single locking screw on the top of the fan bracket 9. Connect the SNK-P0064AP4 cooling fan connector to the fan header marked CPU on the motherboard. PackageList:1 xCPU Cooler 1 xCooling Fan 1 xUser Manual 1 x Screw