makerfocus raspberry pi 4b cooling fan, raspberry pi 4b heatsink, raspberry pi 4b gpio expansion board dc5v 0.2a with led compatible with raspberry pi 4b/3b+/3b makerfocus <br/>product parameters:<br/>nominal voltage: dc 5v<br/>current: 0.2a<br/>size: 65*56*9mm<br/>compaitable: raspberry pi 4b/3b+/3b/2b+/2b/b<br/><br/>product performance:<br/>compatible with multiple versions of raspberry pi; all gpio pins are pulled out, so when the raspberry pi is being cooled, its development function will not be affected.<br/>the cooling fan adopts active cooling mode, the heat can be discharged in time. on the other hand, keep the raspberry pi connection to be convenient.<br/>the expansion board is made of pcb process, it bring the dazzling effect. you could see the led light from heat sink icon after you finished the installation.<br/>the fan adopts active heat dissipation mode, which is better than passive heat dissipation<br/><br/>package including:<br/>1 * expansion board with fan<br/>4 * copper column(column double pass m2.5*17mm)<br/>9 * screw(m2.5*5 countersunk screw)