4000D RS Frame Mid-Tower — Modular High-Airflow Case with 3x RS PWM Fans, InfiniRail Mounting, Multiple 360mm Radiator Support, Reverse-Connector Motherboard Compatible — Black

Pre-installed with three RS PWM fans in the front, the 4000D RS Frame provides strong airflow straight out of the box. The fans support daisy-chainable 4-pin PWM connections and feature a Zero RPM mode for near-silent operation at low loads. Built to accept multiple 360mm radiators, this chassis is engineered for serious cooling setups. The InfiniRail Fan Mounting System uses a steel multi-point rail to give you flexible fan placement across the front and roof. Slide the rail to position fans up to 200mm (140mm in the roof) wherever required, allowing targeted airflow without being limited by fixed mounts. For a tidy build or boosted cooling, the internal side panel beside the motherboard tray can serve as a cable cover to hide wiring, or it can be removed to mount fans to the side for increased cooling capacity. Designed to be Reverse Connector Motherboard Compatible and finished in black, this case balances clean aesthetics with modular thermal performance.