Dual-Ring Design The Prizm ARGB series case fans come in two sizes, 120 & 140mm. They feature a dual-ring aperture design, which means that you can display RGB effects on both sides of the assembly. 7-Colour RGB Lighting RGB LEDs light up the fans in uniform colour & brightness. Motherboard Sync Addressable RGB LED Lighting Enjoy customised RGB colours & effects through compatibility with top-end motherboard manufacturers. PWM Intelligent Case Fan Fan speed automatically adjusts according to temperature, effectively reducing system noise while achieving excellent heat dissipation. Hydraulic Bearing Prizm fans use hydraulic bearings to reduce noise & friction whilst lasting up to 40, 000 hours. Shock-Absorbing Pads on All Four Corners Shock absorbing rubber pads at all corners protects the fan & reduces vibration noise between the fan & the chassis.