CPU cooling accessory Cooler Master Flex Kit VRM Fan with pump-head attachment (black)

Cooler Master Flex Kit VRM Fan with pump-head attachment (black) is a CPU cooling accessory designed to increase directed airflow to voltage regulation modules (VRMs) and nearby motherboard components. The kit contains a compact fan in black and a pump-head attachment that mounts to compatible AIO pump housings, allowing the fan to be positioned close to heat-generating circuitry for more effective targeted cooling during sustained CPU loads.

Advantages

This accessory provides localized cooling without requiring a full overhaul of the existing cooling loop. The pump-head attachment enables convenient placement on compatible AIO units, while the compact fan improves airflow over VRMs and surrounding components to help maintain stable power delivery and reduce thermal throttling risk. Its neutral black finish integrates with common system designs.

Suitable for

• Systems with AIO liquid coolers that support pump-head mounting
• High-performance or overclocked CPUs where VRM temperatures rise under load
• Small form-factor or compact builds with limited airflow around motherboard power stages
• Users seeking targeted cooling for motherboard components without replacing the main cooler

Key specifications

• Purpose: targeted airflow for VRMs and nearby motherboard components
• Color: black
• Includes: compact VRM fan and pump-head attachment for AIO pump housings
• Mounting: designed to attach to compatible AIO pump housings for flexible positioning
• Compatibility: intended for use with motherboards and AIO coolers that allow external pump-head accessories

How to use

Attach the pump-head accessory to a compatible AIO pump housing according to the AIO manufacturer’s guidelines, then position the compact fan so it directs airflow over the VRM area and other heat-sensitive motherboard components. Connect the fan to an available fan header or controller on the motherboard or fan hub, set fan curves to balance noise and cooling performance, and verify secure mounting and cable routing before powering on the system.

Recommendations

Monitor VRM and system temperatures after installation to confirm improved thermal behaviour. Adjust fan speed profiles to prioritize cooling during heavy loads while minimizing noise during idle. Ensure the pump-head attachment is compatible with your AIO model and follow manufacturer instructions to avoid affecting pump operation.