The be quiet! Light Wings LX 140mm PWM is a cooling fan designed to balance silent operation with a visually striking presence in your PC case. It features a 4-pole motor and rifle bearing technology, which helps the fan maintain a long lifespan of up to 60,000 hours while keeping noise levels down to 22.9 dB(A) at full speed. The frosted blades are illuminated by 16 ARGB LEDs located in the hub, creating a soft glow that you can customize via a 5V 3-pin connector. With a maximum speed of 1200 rpm, this 140mm fan moves 56.0 CFM of air to keep your components cool. The 4-pin PWM connector allows your motherboard to automatically adjust the speed based on temperature, and the daisy-chain compatibility simplifies cable management by letting you link multiple fans together. Weighing 165 g and measuring 140 x 25 x 140 mm, it installs easily with the four included screws, making it a practical choice for users who want a quiet, illuminated system without complex wiring.