Information before purchasing: 1. What you see are reverse fan blades. 2. To design the airflow channel reasonably, please purchase both forward and reverse fans. 3.This fan can be connected in series with up to 10 fans. However, if using the white light mode, only 6 fans can be connected in series. If you wish to connect 6 or more PC fans in series under white light mode, please purchase: B097GQ8CQP (Hub) for power supply Specifications: Model: COSMIQ-120-Black, Quantity: 1 Piece, Size:120*120*25mm, Power Cables: 2, with reverse fan blades, Speed:800-2000±10% RPM/min, Noise: 29.2 dB(A), Airflow: 68.5 CFM ±10%, Air Pressure: 2.05 mmH2O, Bearing Type: HDB, Lifespan: Over 50,000 hours, Supports 120/240/360mm CPU water cooling Enjoy a Neat Space: With serial ports and a daisy-chain design, each set of fans requires only one cable, making fan installation easy and convenient while effectively reducing cable clutter, creating a cleaner and more organized case environment Brand-new Experience: Equipped with a small hub, you can easily switch between 12 streaming modes, 6 solid color modes, and 8 rhythm modes, instantly adding brilliance to your gaming world and creating a unique gaming space Music Integrated with Fans: The included RGB controller features a high-sensitivity wireless receiver. Simply activate the music mode through the fan hub, and the dynamic lighting will automatically change with the surrounding sounds, providing a unique audiovisual experience Keep Your System Cool: Each PC fan is designed with PWM control, allowing you to manually adjust the fan speed via software. Each fan supports up to 2000 RPM and 68.5 CFM of airflow, providing sufficient air pressure to keep your system cool Keep Your System Cool: Each PC fan is designed with PWM control, allowing you to manually adjust the fan speed via software. Each fan supports up to 2000 RPM and 68.5 CFM of airflow, providing sufficient air pressure to keep your system cool