
Bought these to use as a heatsink for a USB charger used to power an LED strip in a hot laundry room next to our house - it shared itself the power supply with an exhaust fan that draws some energy. The heatsinks appear to cool the charger somewhat. Also used as a heatsink for the Apple lighting and HDMI adapter, and cools the converter. I thought these guys were a bit taller hence 3 stars.

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