BLACK FRAME LIAN LI BORA DIGITAL SERIES RGB-ARGB LED-ALIMINUIM (3 FANS PACK) Dynamic Fluid Bearing Maximum fan speed: 1800 RPM Ten RGB effects are built in, and the controller has three buttons. In line with the motherboard 5V addressable header The dimensions of the fan are 120 x 120 x 27 mm. Fluid Dynamic Bearing (FDB) Type of Bearing ACOUSTICAL NOISE (MIN-MAX.) FAN QUANTITY 3 PCS 19.4 ~ 29 dBA Click Here for Additional Information. ALIMINUIM (3 FANS PACK) LIAN LI BORA DIGITAL SERIES RGB-ARGB LED-Black Frame For Additional Cooling Fans Display More