4cm Cooling Fan for\n2GB/4GB (A02/B01/SUB) 5V 4PIN Reverse8291\n\n1. Use this low-noise cooling fan to prevent your for Nano board from overheating!\n2. This black cooling fan is designed for the NANO board.\n3. With stronger wind and better heat dissipation effect, the service life of the development board can be effectively extended.\n4. The fan adopts anti reverse connection interface to prevent the user from damaging the board by mistake.\n5. We also provide 4 screws to fix it on the for NANO board.\n\nProduct name: cooling fan\nSize: 40 x 40 x 10mm\nWire length: 8cm\nRated voltage: DC 5V\nStarting voltage: 4V\nRated current: 0.15\u00B10.02\nRated speed: 4800rpm\u00B110%\nLife: 25\u2103,20000 hours\nPolarity protection: The circuit is not burned when VCC GND is connected in reverse\nOperating temperature / humidity range: 10\u2103~ + 60\u2103 / 35% -85% \ncolor:Black\nMaterial:ABS\n\nPackage Contents:\n1 x for Nano A02/B01 cooling fan