# Cooler Master Mobius 120 Case Fan - Ring Blade Design (PWM), Ultra-Durable Loop Dynamic Bearing (max. 63.1 CFM, 2.69 mmH2O, 22.6 dBA), Chamfered Air-Focus Frame - Black

- Category: Case Cooler
- Brand: Cooler Master
- Model: MFZ-M2NN-21NPK-R1
- Part number: MFZ-M2NN-21NPK-R1
- Price (US): $55.00
- Price last checked: 2026-08-06
- Rating: 4.2/5 from 37 Amazon reviews
- Warranty: 1 year
- Product page: https://buildmypc.net/component-details/case-cooler/cooler-master-mfz-m2nn-21npk-r1/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Cooler Master |
| Model | MFZ-M2NN-21NPK-R1 |
| FAN RPM | 2050 RPM |
| Noise Level | 22.6 dBA |
| Airflow | 63.1 CFM |

## Key Features

- HIGH-PRESSURE CASE FAN - The Mobius 120 case fan is an excellent choice for extreme conditions such as ultra-compact (SFF) cases, overclocking, or high-intensity hardware usage (gaming, rendering and video editing)
- RING BLADE DESIGN - A revolutionary ring blade design employs connected fan blades with a more stable structure that reduces vibration & subsequent noise (22.6 dBA) - particularly during changes in fan speed (0-2050 RPM, 4-Pin PWM)
- LOOP DYNAMIC BEARING - An all-new loop dynamic bearing (LDB) utilises a thick oil coating & reflow system that generates cycled lubrication for incredible durability (200,000 hours MTTF) and employs a fully-sealed air & dust proof frame
- ANTI-SWAY SYSTEM – A magnetic ring keeps the bearing shaft from tilting which improves fan stability and prevents blade obstruction under various orientations
- ANGLED INNER FRAME – An angled inner frame with chamfered sides help focus & direct airflow for maximum pressure & efficiency (63.1 CFM, 2.69 mmH2O) which is integral to improving cooling performance

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