Fan Cooler Master Mobius 120 OC 12 cm Black 3 Speeds 3200 RPM

The Cooler Master Mobius 120 OC is a 120 mm case fan designed for high-performance PC cooling. This three-speed fan reaches up to 3200 RPM, uses double ball bearings and a metal motor hub for improved durability and stability, and includes anti-vibration dampers and a fan speed toggle integrated into the cable. The fan is black and intended for use in computer chassis to provide efficient airflow with rated static pressures from 1.19 mmH2O to 4.75 mmH2O.

Advantages

Interconnecting ring blade design increases structural rigidity to reduce vibration and ensure stable operation. The metal motor hub adds reinforcement for consistent performance at high speeds. Double ball bearings minimize friction for quieter operation and extended lifespan. Integrated premium anti-vibration corner dampers limit rattling and help maintain chassis stability. The inline fan speed toggle allows convenient switching between 1500 RPM and 3200 RPM settings for flexible cooling control.

Suitable for

• Case cooling in gaming and high-performance desktops
• Replacing or upgrading 120 mm chassis fans
• Systems requiring adjustable fan speeds or higher static pressure

Key specifications

• Brand: Cooler Master
• Model: Mobius 120 OC (MFZ-M2NN-32NPK-R1)
• Fan diameter: 120 mm
• Product colour: Black
• Maximum speed: up to 3200 RPM
• Speeds: three-speed operation (adjustable via inline toggle, 1500–3200 RPM)
• Bearing type: Double ball bearing
• Motor hub: Metal motor hub
• Static pressure range: approx. 1.19–4.75 mmH2O (manufacturer data)
• EAN: 4719512132098

How to use

Install the Mobius 120 OC into a standard 120 mm fan mounting position in your PC chassis using the provided or existing screws. Connect the fan to a compatible fan header or power connector on your motherboard or fan controller, observing correct polarity. Use the inline speed toggle on the cable to select the desired operating speed between the available settings; ensure adequate clearance for the cable and dampers when positioning the fan. Verify airflow direction and cable routing before closing the case.

Recommendations

For optimal cooling and noise balance, start with the mid-speed setting and monitor system temperatures under typical load. Use the higher speed for sustained heavy loads or when higher static pressure is needed for radiator or densely packed cases. Periodically check mounting points and clean dust from blades and dampers to maintain performance and longevity.