SilverStone XE04-2066 is a CPU cooler designed for industrial for 4U rackmount servers with Intel LGA 2011 / 2066 Square & Narrow sockets. This 126mm tall 4U active CPU cooler features a 4pin PWM dual ball bearing 92mm fan with speeds of up to 3800 RPM for cooling power capable of 165W TDP. For those with a need for the most effective and reliable small form factor server/workstation cooler on the market, the XE04-2066 is a top choice.