# Razer Kunai Hydraulic 140MM aRGB PC Fan: Quiet, Powerful aRGB Fan - PWM Fan Controller Support & Connect Up to 8 Fans - Powered by Razer Chroma RGB - 1 Fan

- Category: Case Cooler
- Brand: Razer
- Model: RC21-01800200-R3M1
- Part number: RC21-01800200-R3M1
- Price (US): $39.95
- Price last checked: 2026-08-06
- Rating: 4.6/5 from 151 Amazon reviews
- Warranty: 2 years
- Product page: https://buildmypc.net/component-details/case-cooler/razer-rc21-01800200-r3m1/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Razer |
| Model | RC21-01800200-R3M1 |
| FAN RPM | 500 to 1600 RPM |
| Noise Level | 15 to 30 dBA |
| Airflow | 34.48 to 81 CFM |

## Key Features

- Quiet, Powerful: Cool your PC with high airflow aRGB fans packed with LEDs and lighting effects powered by Razer Chroma RGB
- Connect Up to 8 Fans: Daisy chain and connect up to 8 Razer Kunai fans to Pulse Width Modulation and aRGB controllers to create immersive lighting effects - supported by Razer Synapse software for ultimate customization
- PWM Fan Controller Support: Whether you need maximum airflow to cool your PC or run quietly at lower RPMs, our Pulse Width Modulation fan controller allows you to conveniently adjust fan speed based on your needs (PWM fan sold separately)
- Powered by Razer Chroma RGB: Unlock ultimate aRGB customization with 16.8 million colors, light patterns, and effects which react to your gameplay - get the world’s largest lighting ecosystem and control it from one platform
- Dimensions: 140 mm (L) x 25 mm (W) x 140 mm (H) / 5.5"x 0.98"x 5.5"​

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