Computer case fan NoiseBlocker BlackSilentFan XL1 120 mm, 5 V, 1000 RPM, 13 dB, 69 m³/h, black

The NoiseBlocker BlackSilentFan XL1 is a 120 mm case fan engineered for low-noise system ventilation. Sized 120×120×25 mm and finished in black, the fan runs from a 5 V supply and reaches up to 1000 RPM, producing a measured noise level of 13 dB at high speed while delivering an airflow of 69 m³/h. Its design focuses on gentle but effective airflow for quiet desktop builds, case ventilation and passive-cooled systems that require low acoustic output.

Advantages

The BlackSilentFan XL1 combines a glass-fibre reinforced chassis with an anti-dust polycarbonate rotor to provide a stable, durable structure that resists deformation. It offers extremely low start voltage and an extended connection cable for flexible installation. The motor drive includes wide-range control characteristics and low impulse noise operation, and the construction features reverse-pole and overload protection with an automatic restart function to enhance reliability. The fan is supplied with mounting screws for straightforward fitting.

Suitable for

• Quiet desktop computer builds and home office PCs
• Case ventilation where low acoustic output is required
• Passive-cooled systems needing gentle airflow without strong turbulence
• Systems that benefit from long cable reach for flexible cable routing

Key specifications

• Fan diameter: 120 mm
• Dimensions: 120 × 120 × 25 mm
• Rated voltage: 5 V
• Maximum speed: 1000 RPM
• Acoustic level: 13 dB (at max speed)
• Airflow: 69 m³/h
• Colour: Black
• Chassis material: glass-fibre reinforced construction
• Rotor material: anti-dust polycarbonate
• Features: extremely low start voltage, reverse-pole and overload protection, restart function
• Includes: mounting screws and extra-long connection cable

How to use

Install the fan in a standard 120 mm mounting location inside the computer case using the supplied screws, observing the indicated airflow direction. Connect the fan to a compatible 5 V header or power source; ensure the connector orientation matches the motherboard or controller header to avoid reverse polarity. Route the extra-long cable to prevent interference with other components and secure the cable to prevent contact with moving parts. Verify the fan spins at expected speed and produces low noise during initial power-on.

Usage recommendations

For optimal results, place the BlackSilentFan XL1 where it supports case airflow balance—typically as an intake or exhaust fan in 120 mm positions—and pair it with other low-speed fans to maintain a quiet environment. Periodic dust checks and cleaning of the rotor and chassis will preserve low noise levels and airflow performance. Avoid running the fan at voltages or speeds outside the specified 5 V / 1000 RPM range to maintain longevity and protection functions.