Lian li UNI Fan SL140 V2 ARGB Case Fan, PBT+PC+Aluminum Materials, 140mm Fan, Up to 1600RPM Fan Speed, Up to 77.6CFM Airflow, Fluid Dynamic Bearing, Single Pack, White | G99.14SLV21W.00

Improved daisy chain design to connect 2 clusters of fans. AL140 V2 fan frame thickness is 28mm to provide 20% improved airflow compared to V1. Removable interlocking keys to provide better radiator clearance. Start/stop fan RPM support for a quieter environment. New corner lighting visible from all sides Only one cable is required for each fan cluster when using the provided new UNI HUB to control lighting effects via L-Connect