Features: Control circuit, the pump is more stable, and is suitable for PC CPU cooling system. The small 3P power connector can plug directly into the original position of the headboard fan. Support speed test function. Ultra-quiet experience with a rubber shock absorber base. High quality and durable performance. Specification: Material: Acrylic + Rubber Flow Rate: Max300L/h Head: Maximum 1.9 meters Power Connector: Small 3P connector Voltage: DC12V Power: 4W Water Tank Capacity: 150ml Noise: 23DB Spout Diameter: 8 mm Remark: The red line is the DC12V power line, the black line is the ground line, and the white line is the speed line. Size: Circulating pump: approx. 7.8 x 5.5 x 6.5 cm/ 3.1 x 2.2 x 2.6 in ; Rubber chassis: approx. 8 x 7 cm/ 3.1 x 2.8 in Package Weight: 192 g Package list: 1 x Circulating Pump 1 x Rubber Chassis 1 x Double-sided Adhesive Tape 1 x Component Bag .