
I received exactly what was described after searching to no avail for a cooler for my 4B that could be delivered promptly. Buying here costs three times more than from a Chinese supplier. Let me save you time and money: the 4C heatsink is completely mechanically incompatible with the 4B board. I took mine to the milling machine to make something reasonably fitting while waiting for the part to arrive on its slow boat.

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