Banana Pi R3 / R4 Universal Cooling System Professional Thermal Solutions for All Major BPI Development Boards (BE14 Wifi7 Fan)

[Precise Compatibility, Board-Specific] Designed for BPI R3, RPI R4 Pro, R4 Lite development boards with 4 cooling model options: Variation 1 (R3 aluminum heatsink + PWM fan), Variation 2 (R4 universal PWM fan), Variation 3 (R4
Pro: 4010HM/5020HA active cooling), Variation 4 (R4 Lite aluminum heatsink). Please select the corresponding variation according to your board model.. [PWM Smart Speed Control, Quiet Operation] BPI R3 and R4 series support PWM fan speed control, achieving on-demand quiet cooling. by default, the fan usually starts automatically when CPU temperature reaches about 45°C, providing a quieter operating environment.. [Flexible Active and Passive Combinations] Variation 1 and Variation 3 are active air cooling solutions, suitable for high-load and continuous operation scenarios. Variation 4 provides passive aluminum heatsinks (for R4 Lite board), suitable for scenarios that pursue quietness and low power consumption.. [Heat and Durability Crafted] Adopting aluminum alloy and optimized fin design, combined with appropriate thermal interface, achieves efficient heat conduction and surface heat dissipation. Variation 3's 4010HM/5020HA fan is suitable for R4 Pro's MT7988A platform, matching more reliable thermal management