120mm Large Aluminum Heatsink 120x120x20mm / 4.72x4.72x0.79Inch Heat Sink Square Cooler for WiFi Router Mac mini Base Power Supply IC Graphics Card Memory Cooling 120mmx120mmx20mm, Black

I own five of these heat sinks and have them installed on various ubiquiti PoE switches. I also decided to place a 120mm cooling fan on top of the heat sink. With both, heatsink and the fan, my ubiquiti gear runs very cool. I recommend this product for your similar needs.

This thing works great. I put it on my landscape lights transformer and it lowered the temperature from 145 degrees to 104 degrees. This is much better build quality than I expected. It allows for great airflow with cross cut pattern. Much better than I expected.

I have a Unifi Cloud Key device that seems to get hot enough to fry an egg on. I purchased this along with a Aiyunni 100x100x1mm thermal pad to secure it to the device. The heat sink fits perfect for my application and dissipates heat very well. 5 stars.

The slots between the fins allow excellent air flow which leads to faster cooling process.

Bought this to use as a heat disappating resting base for my router and it works amazingly well, no complaints!

Excellent quality heat sink, works well.

My use case for this heatsink was to use on top of a MINIX Z100-0db fanless computer, to provide extra heat dissipation. I placed the heatsink directly on top of the metal case of the Z100-0db (itself also a heatsink), and it allowed me to observe a definite improvement on the temperatures and performance of that computer. This heatsink is the perfect size for the MINIX, and it is very well build, with no apparent flaws. It also has an attractive appearance, which matches well with the industrial rugged looks of the MINIX. I can highly recommend this product!

Bought this for a cutting platform for my wainlux k 8 laser engraver. Works perfect, muck cheaper than the alternative

Very effective passive heat dissipation, I’ve installed it under the dock station and the difference in temperature is significant

Très bien sous un Apple Mac mini , c’est exactement la bonne taille

しっかりした、すごく良い商品です。 Mac miniの上にのせて使っていますが、放熱効果すごく高いです。

I bought this for my Aiyima A07 Max amplifier. During the summers, the ambient temperature in my area reaches 30 degrees Celsius, and (consequently) the amplifier gets pretty hot. I just zip-tied this to my amplifier with some Noctua paste, and now it's happily running lukewarm to the touch.

Used on top of an audio amplifier that runs quite hot. Dissipates the heat effectively.