Fan Jonsbo SL-120C 12 cm 1500 RPM 32 dB 59.48 CFM

The Jonsbo SL-120C is a 120 mm case fan designed for use in desktop computer systems. It runs at a nominal speed of 1500 RPM and delivers up to 59.48 CFM of airflow with a measured air pressure of 1.81 mmH2O. The fan uses a hydraulic bearing for extended operational life and reduced friction. Available in black and white finishes, the SL-120C is suitable for standard intake, exhaust and spot-cooling installations within PC cases.

Advantages

The hydraulic bearing design provides longer service life and quieter operation compared with basic sleeve bearings. At 1500 RPM the fan balances airflow and acoustic performance, producing a sound level around 32 dB under typical conditions. A maximum airflow of 59.48 CFM supports effective heat removal from case interiors while the 1.81 mmH2O static pressure enables moderate resistance through filters or radiators. The plain black or white aesthetic fits varied build styles without introducing complex lighting or additional power requirements.

Suitable for

• Case intake or exhaust fans for mid-tower and full-tower desktop PCs
• Supplementary cooling for GPU or VRM areas
• Replacement fan for quiet or value-oriented system builds
• Use behind dust filters or on shallow radiators where moderate pressure is acceptable

Key specifications

• Fan size: 120 mm
• Nominal speed: 1500 RPM
• Maximum airflow: 59.48 CFM
• Static/air pressure: 1.81 mmH2O
• Acoustic noise level: approximately 32 dB
• Bearing type: hydraulic bearing
• Available colors: black, white

How to use

Mount the fan to a compatible 120 mm fan slot in the case or on a radiator using the supplied screws or standard 120 mm mounting hardware. Connect the fan to the system using the appropriate power connector on the motherboard or fan controller; ensure the connector type and pinout match the system header. Orient the fan so that airflow direction aligns with the intended intake or exhaust path. Regularly inspect and clean the fan blades and surrounding area to maintain peak airflow and prevent dust buildup.

Recommendations

For balanced noise and cooling performance, use the SL-120C at default or motherboard-controlled speeds rather than at constant full power. When installing multiple fans, maintain consistent airflow direction across the case to create predictable intake and exhaust patterns. Periodic cleaning and checking of the hydraulic bearing will help sustain quiet operation over time.