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AABCOOLING AAB C21
- Adapter for 3-pin fans that reduces the supply voltage from 12 V to 9 V. Lowers fan speed and noise. Also fits 4-pin fans (without PWM control).
3-pin fan adapter reducing voltage to 9 V
AABCOOLING AAB C21 is an adapter for fans with a 3-pin connector that reduces the supply voltage from 12 V to 9 V. The built-in resistor lowers the fan speed and therefore the noise level.

Key features
- Reduces fan supply voltage from 12 V to 9 V
- Lower fan speed and quieter operation
- Compact size: 24.6 × 8.1 × 6 mm
- Plugs in between the fan and the 3-pin header
Applications
The adapter is designed for fans and other PC components with a 3-pin connector. It also fits 4-pin fans – the automatic PWM speed control pin then remains unconnected.

Specifications
- Connectors: 1 × 3-pin (male), 1 × 3-pin (female)
- Power supply: 12 V DC
- Voltage reduction: from 12 V to 9 V
- Resistor: 56 Ω, 0.25 W
- Dimensions: 24.6 × 8.1 × 6 mm
In the box
- 1 × AABCOOLING AAB C21
- 1 × packaging





