FAN AXIAL 40MM X 40MM X 20MM 5VDC 350mA; Supply Voltage:5V; Current Type:DC; Fan Frame Size:40mm; External Depth:20mm; Noise Rating:40dBA; Flow Rate - Imperial:11.65cu.ft/min; Flow Rate - Metric:0.33m /min; Bearing Type:Ball ;RoHS Compliant: Yes