The arc surface of the fan frame is guided, which can produce good airflow and cooling effect, efficient ventilation, and large-capacity heat dissipation. With 15 LED lights, it can meet the individual needs of most players, and you can enjoy a distinctive vision after powering on. 9 Piece blades with a threaded wind groove design improves air circulation, ventilation and heat dissipation around your chassis to cool your vital components. A fully enclosed hydraulic bearing design provides a quieter and longer lasting fan. Eight sponge shockproof pads provide extra protection, help to absorb fan vibration and keep the overall noise down to a minimum. Comes with a 3pin and 4pin, male and female, it is powered through a 3pin power connector, as well as being able to connect to a compatible motherboard, you can connect to a compatible hub to give you manual control. Made of premium metal and plastic material, the cooling fan is durable and long service life. The length and width of the computer cooling fan is approx 12cm, the height is approx 2.5cm. It is widely used for computer case, computer CPU radiator, computer host, etc. Item Name: Case Fan Material:Plastic,Metal Operating Hours: about 20000H Air Volume: 36.0CFM Rated Voltage: 12V DC Noise: 23.5DBA Fan Speed: 1100RPM10% Bearing Type: Hydraulic Bearing Size Details: Size: 12cm x 12cm x 2.5cm/4.73" x 4.73" x 0.99" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 4 X Screws 1 X Case Fan