TL-B4020 40mm PWM Mini Cooling Fan, Dual Ball Bearing, 5500 RPM, for Small-Form-Factor PC, CPU and GPU

The TL-B4020 40mm PWM mini case cooling fan is designed for compact and small form factor builds, providing efficient heat dissipation in tight spaces. Ideal for mini‐ITX systems, NAS, HTPCs, routers, switches, 3D printers, and other small electronic devices.

With a 40 x 40 x 20 mm profile, this fan fits easily into narrow cases and confined areas where standard case fans cannot be installed. It is perfect for improving airflow around components such as chipsets, VRMs, RAM, and small heatsinks.

The 4‐pin PWM interface allows the motherboard or fan controller to automatically adjust fan speed according to system temperature. This ensures an optimal balance between cooling performance and noise, providing silent operation during light loads and powerful airflow when needed.

Equipped with double ball bearings, the TL-B4020 offers excellent durability and stability. It supports continuous operation over long periods, making it suitable for 24/7 systems and industrial‐grade applications.

Running at speeds up to 5500RPM, this mini fan delivers strong airflow and focused cooling to quickly reduce component temperatures. It helps increase system stability and extend the lifespan of critical hardware in high‐density builds.

Colour: As Shown

Material: ABS

Package Contents:

1*Computer Case Mini Cooling Fan set

Only the above package content, other products are not included.

Note: Light reflection and different displays may cause the colour of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.