AC Infinity AI-MPF120P2 MULTIFAN S7-P Dual 120mm Quiet AC-Powered Cooling Fans can be positioned to stand upright or laid flat to cool various electronics and components. Includes eight large anti-vibration rubber feet and a 6-foot power cord. The included turbo power adapter increases the fan's RPM by 25% and boosts CFM ratings for higher airflow. It also enables the fan to be powered through a standard wall outlet. The two fans are permanently connected by a 2.5 feet cord and share the same multi-speed controller. Each unit contains an USB port, up to six fans can be daisy chained together to share the same power source
This fan system is CE and RoHS certified and contains premium dual-ball bearings, allowing it to be mounted horizontally or vertically. Contains AC Infinity axial fans ACX-FD1225(B)05W5 which meet UL-507 standards for safety under Underwriters Laboratories certificate E503903.

Features:

• Ultra-quiet UL-certified AC-powered fan designed to cool various electronics and components.
• Features a multi-speed controller to set the fan's speed to optimal noise and airflow levels.
• Dual-ball bearings have a lifespan of 67,000 hours and allows the fans to be laid flat or stand upright.
• Turbo power adapter increases maximum fan speed and enables the fan to be powered through an AC outlet.
• Dimensions: 4.7 x 4.7 x 1 in. per fan | Total Airflow: 130 CFM | Total Noise: 19 dBA | Bearings: Dual Ball

For electronics and components that requires more airflow; each fan unit can daisy chain additional MULTIFAN S series fans. Up to four fans can share the same USB power source; and up to six fans can share the same thermal controller (sold separately). MULTIFAN S1, S2, S3 and S4 contains one fan, and MULTIFAN S5 and S7 contains two fans.