Two KDE0504PKV2 40mm x 4cm DC 5V 0.6W 4020 40x40x20mm ultra-quiet USB cooling fans

Model: KDE1204PFV2 MS. A. GN Dimensions: 40×40×20mm Voltage: DC5V Voltage Range: DC2.0V-7.6V Power: 0.6W Speed: 6200 RPM Temperature Range: -10 to 70 Bearing Structure: Magnetic levitation HYPRO bearing Wiring: +Red-Black Airflow: 9.8CFM Noise: 18.0 d B(A) Material: Glass fiber reinforced plastic, PBT housing, PA blades