dorhea 2pcs 3007 fan for raspberry pi 4 fan 30x30x7mm pi brushless cooling fan brushless 3.3v 5v dc quiet fan for raspberry pi 4, pi 3 b+, pi 3 b, pi 2, pi b+, pi zero/zero w,robot project dorhea specifications:<br> - fan size: 30x30x7.5 mm (lxwxh)<br> - wire length: 2.6 inches (66mm)<br> - connector: one-to-two pin<br> - color: black<br> - bearing type: hypro bearing<br> - operating voltage: dc 3.3v - 5v<br> - start up voltage: dc 3v<br> - noise level: 15.92dba<br> - life time: 30,000 hours<br><p> suitable for raspberry pi b / raspberry pi b+ / raspberry pi a+ / raspberry pi 2 and pi 3 model b+ / raspberry pi 3 / raspberry pi 4/ pi zero/zero w<br><p> package including<br> 2 x cooling fan<br> 8 x nuts <br> 8 x screw <br>