Efficient, low-noise heatsink & radiator cooling with PWM control The wide body, low-pitch blades of the SP120 fans combined with the custom housing provides outstanding static pressure & airflow through heatsinks or radiators. With rubberized corners, a quiet & reliable Advanced Hydraulic Bearing, & PWM support for increased fan speed control, the SP120 truly is the strong, silent type. Included in the box are the three user-replaceable colored rings, in red, blue, & white, so you can customize your fan to match your case’s components. Each fan also features blacked-out wires & connectors, so your build looks elegant & clean when done. Features Outstanding static pressure of up to 1.29 mm/H20 4-PIN PWM Support for increased fan speed control Seven wide body, low-pitch custom blades for optimal static pressure at very low noise levels Custom fan enclosure for ducting air in the right direction with minimal interference Advanced hydraulic bearing for reliable, quiet operation Rubberized corners for sound damping when installed with standard screws Replaceable colored rings so you can match your fans to your case System requirements Motherboard with an open standard 3-pin fan connector