OEM Industries C33211-71A 120mm Square Cooler 12V .49A 3-Wires

120mm Square Fan for Targeted Cooling

This 120mm square cooler uses a NIDEC 12038 motor running at 12V and 0.49A. It suits builders replacing a same-size unit in industrial chassis or legacy servers where a round frame will not fit. The three-wire connector provides tachometer feedback for hardware monitoring. Buyers needing PWM speed control or RGB lighting should look elsewhere.

Ball Bearing Stability Under Continuous Duty

The ball bearing design maintains consistent rotation during long operating periods without the friction rise seen in sleeve alternatives. At 0.49A the current draw stays predictable, so thermal curves remain steady across extended workloads. The fixed 12V supply means speed does not modulate with load changes. Systems requiring variable airflow will not get it from this model.

Black Frame with Three-Wire Power Lead

The black square housing mounts directly to standard 120mm hole patterns using four corner screws. A three-wire lead carries power, ground and a speed signal for BIOS or fan-controller reading. No LED illumination is present, keeping the unit suitable for dark server rooms. Installers must verify connector polarity before applying power.