Features: brand new and high quality Double-ring high brightness fan, multiple modes, built-in colorful RGB light bar, colorful color changing fan! Support speed adjustment, brightness adjustment, support to adjust the running light speed, the fan can be stopped. The fan is a small 6pin interface, and the controller is powered by a large 4pin interface. You can just plug in the desktop power supply and use the big 4pin to get power. The hydraulic bearing has a large oil storage space and forms an original loop-back oil supply circuit. It is driven by a strong magnetic motor to make the fan longer, quieter and more durable. There are 8 foot pads for shock absorption, shock and noise reduction. Specifications: Material: PC Size: approx. 12x12x2.5cm/4.72x4.72x0.98in Rated voltage: 12VDC Speed: 0-1400rpm Air volume: 37.8cfm 10% Fan noise: 25dba 10% Product Life: 30000h Fan interface: 6pin small, 4Pin big Bearing Type: Hydraulic Bearing Color: blue, green, red, color, white Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1PC x for Case Fan