Supports to cooling down the Raspberry Pi 4 board when using the Pi 4 expansion board.Raspberry Pi HAT positioning hole is M2.5 internal thread. (this design is convenient to fix)Supports the installation of 25mm fans; Cooling fan can be added when the heat dissipation of a single aluminum heat sink is not enough, so that all heat dissipation problems can be solved.The fan equipped with the heatsink is the same fan as the official POE expansion board.Colour: blackMaterial: aluminum alloySize: 65x55x7mmPackage Contents:1 x armor heatsink1 x screws packOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
