The ultra-quiet AIRPLATE S2 blower system is designed to cool home theaters, entertainment centers, and audio video cabinets. The unit's low-profile design is ideal where mounting space is limited or a smaller footprint is desired. Features a speed controller and 6 foot power cord. Features a CNC-machined anodized aluminum frame with a modern brushed black finish. Blowers are set to exhaust air out of the enclosure. Includes all necessary hardware to easily mount the unit onto a cabinet and power it through an USB port or standard wall outlet. For cabinets that requires more airflow, each unit can be connected to additional AIRPLATE S and T series cabinet fans. Up to four fans can share the same USB power source; and up to six fans can share the same thermal controller or wall outlet power source. Note: AIRPLATE S7 contains two fans and AIRPLATE S9 contains three fans. All setups with more than four daisy-chained fans must have their inline speed controller set to high to prevent overload, e.g. two AIRPLATE S9 units daisy-chained together.