sink
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Aluminium Heat Sink for Raspberry Pi
$1.94Raspberry Pi heat sink ensures that the board remains cool with no need for fans. This extends the life of Raspberry Pi and hence reduces hardware failure.
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Raspberry Pi 4 Aluminum Heatsink Case
$16.20It is not an enclosure or case, it should be called heatsink because the case itself is CNC aluminum and comes with thermal paste/tape to effectively dissipate heat generated from the processor, RAM IC. Furthermore, it is also integrated with two cooling fans (assembled, but not fasten to the case), just connect the power to run it. Please note that its Just the casing only (Without Raspberry Pi) The heatsink is only for Raspberry Pi 4 usage.