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P165
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[[File:P165-B-1.jpg|thumb|right|11mm Embedded Heatsink: P165-B]]
[[File:P165-B-2.jpg|thumb|right|11mm Embedded Heatsink: P165-B]]
[[File:P165-A 8mm version parameter.jpg|thumb|right|P165-A 8mm version parameter]]
[[File:P165-A 8mm version packing list.jpg|thumb|right|P165-A 8mm version packing list]]
[[File:P165-3.jpg|thumb|right|7mm Embedded Heatsink: P165-A]]
[[File:P165-2.jpg|thumb|right|7mm Embedded Heatsink: P165-A]]
[[File:P165-1.jpg|thumb|right|7mm Embedded Heatsink: P165-A]]
[[File:Screws Pack for P165-A.jpg|thumb|right|Screws Pack for P165-A embedded heatsink7mm version]]
[[File:P165-001.jpg|thumb|right|P165 with armor case bottom cover]]
[[File:X825+X735+P165.jpg|thumb|right|X825 V2.0+X735+P165-A]]
'''Why is it compatible with the pi 4 expansion boards?'''
# The P165(P165-A) Embedded Armor Aluminum Alloy Heatsink Radiator is 7mm high <span class="tb_red">(New Version_Jan 2026: 8mm High)</span>, which is designed with negative tolerance) and . And it 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?'''
==Update History==
# Jan 2026 Upgrade: Height increased from 7mm to 8mm for better heat dissipation. Compatibility remains virtually unaffected， but accessories have changed – please refer to [https://wiki.geekworm.com/File:P165-A_8mm_version_packing_list.jpg P165-A 8mm version]. Both versions are currently shipping.
# We only keep the M2.5*5+4mm, M2.5*5+5mm, M2.5*13+6mm spacers in the P165-A packing list(in August 2021), due to the Raspberry Pi expansion board usually with 12mm or 20mm height, the three spacers combination are enough in application.
# On November 11th, 2020, based on customer feedback, a slightly thicker version was released, which is 11mm thickness. It supports 3010 cooling fan, will have a better heat dissipation function and compatible with PoE expansion board. This new embedded heatsink is named P165-B, while the old radiator will be renamed P165-A from P165.
==Packing List==
P165-A Packing List:
* 1x 7mm 8mm armor heatsink(P165-A)
* 4 x PM2.5x12mm Screws
* 4 x M2.5x5 +4mm Spacers