Radxa Heatsink 6540B
The Radxa Heatsink 6540B (latest version V3.0) is an active heatsink designed for the ROCK 5C and Cubie A7A, measuring 65mm long, 40mm wide and 10mm high. You can check your heatsink version on the product page.
Spec
- Material: Aluminum
- Dimensions: 65 x 40 x 10 mm
- Speed: 7000rpm ± 10%
- Connector: 2-Pin 1.25mm Pitch Connector
- Input voltage: 5V

Installation Guide
This installation guide uses the ROCK 5C as an example.
- First, remove the plastic protective film from the thermal silicone pad.

- Next, precisely align and adhere the thermal silicone pad to the SoC position as shown in the image.

- Then, accurately connect the fan connector to the fan socket on the ROCK 5C as illustrated.

- Finally, align the heatsink with the heatsink hole position on the ROCK 5C and gently press the plastic clips on both sides of the heatsink to ensure a secure fit. The completed installation should look like the image below.
