20 x ARCTIC 4-pin PWM Fan Splitter Cable PST Splitter Cables PWM + PST Case Fans
4 x 4-pin PWM Socket (RPM Signal on the first socket only). Synchronizes the fan speed based on your PWM settings. 1 x 4-pin PWM Connector. ARCTIC P14 Max 14cm PWM Black PC Case Fan Fluid Dynamic Bearing 2800RPM 94CFM.