Skip to main content

FAN

Introduction​

ROCK 5 ITX provides a standard 4-pin PWM fan header for compatible coolers. The recommended cooler is the Radxa 8418B.

Installation and usage​

Install the Radxa 8418B cooler​

  1. Apply thermal grease evenly to the RK3588 SoC.
  2. Align the cooler with the four mounting holes on the motherboard, and make sure the fan cable can reach the FAN header comfortably.
  3. Align and secure the fasteners with the four mounting holes on the back of the motherboard.
  4. Tighten the screws gradually in diagonal order to avoid uneven stress on the board.
  5. Connect the fan cable to the FAN header on the motherboard. The connector is keyed, so check the orientation before inserting it.
Heatsink 8418B Heatsink 8418B 2 Heatsink 8418B 3

Usage notes​

  • The ROCK 5 ITX FAN header supports 4-pin PWM fans.
  • The board provides a standard FAN header for fan-equipped heatsinks.
  • The current hardware interface does not support fan tachometer readback, so fan speed reporting is not available.
  • For the full chassis assembly flow, see the Assembly Guide.

Support List​

  • Radxa 8418B Radiator

Radxa 8418B Radiator​

The Radxa 8418B Radiator is a radiator for the ROCK 5 ITX.

Heatsink 8418B

Physical Specifications​

  • Product size: 84 x 84 x 18 mm
  • Fan Size: 70 x 70 x 10 mm
  • Fan Connector: 4-Pin fan connector with PWM control
  • Material: All aluminium alloy
  • Speed: 1500 to 3000rpm ± 20% Airflow: 13.5 CFM
  • Airflow: 13.5 CFM
  • Sound: 13 to 28 dB(A)
  • Rated Voltage: DC12V 0.16A(MAX) 1.92W

Accessories List​

Heatsink 8418B

    You need to be logged into GitHub to post a comment. If you are already logged in, please ignore this message.

    Radxa-docs © 2026 by Radxa Computer (Shenzhen) Co.,Ltd. is licensed under CC BY 4.0