Shutao 2Pcs 40mm Fan 157in Dual Ball USB Cooler DC 5V Brushless Cooling 40x40x10mm Fan Cooler 4010 Axial Fan for 3D Printer Heatsink Fan PC Computer Case Industry Cooling Fan

USB connector 40mm 40x40x10mm 5V DC dual ball cooling fan 157in fan noise 22dba 08W Rotation 7700rpm 40mm fan bearing type dual ball bearing lead wire USB 4010 fan widely used for anywhere electronic which need cooling compatible with humidifier and other small product PC server CPU notebook 3D printer cooling system 4010 dual ball cooling fan features efficient heat dissipation and low noise motor reducing equipment working environment temperatureprolong the service life of equipment.