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P165
,# The P165(P165-A) Embedded Armor Aluminum Alloy Heatsink Radiator is 7mm high (designed with negative tolerance) and is equipped with M2.5*5+5 copper spacers; so the total height is 12mm, which can support most of Raspberry Pi 4 expansion boards(not support PoE expansion board); if you use expansion board with other height, you only need to replace the copper spacers with the right height. (If you need a special height copper spacers, please contact us.)
# The raspberry pi hat positioning hole has internal thread for easy fixing from above or below; Compared to the raspberry pi PCB, the entire heat sink shrinks inward by 0.5 mm.
'''Why design this new P165-B 11mm heatsink?'''
# We found that the copper spacers height required for most Raspberry Pi expansion boards is 11mm, so we designed this 11mm embedded heatsink(P165-B). Compared with the old model(P165-A), the heat dissipation area is increased and the heat dissipation effect will be better;
# at the same time, this new version support POE extension;
'''What if the Raspberry Pi 4 expansion board comes into contact with the P165-B 11mm heatsink?'''
* Please use the 2*20 female header to add the height of expanion board.
==Update History==
* Only supports Raspberry Pi 4 Model B;
* Supports to cooling down the Raspberry Pi 4 board when using the Pi 4 expansion board;(Please choose P165-B if you need to use it with PoE board);
* Equipped with a variety of screws and copper spacers;(The screw packs of P165-A1 A and P165-B are different);
* Raspberry Pi HAT positioning hole is M2.5 internal thread; (this design is convenient to fix);
* Supports fan installation; Cooling fan can be added when the heat dissipation of a single aluminum heat sink is not enough;