Lian Li UF-RSLIN120-1B 120mm case fan black

Reverse-blade ARGB fan

This single 120 mm case fan uses a reversed blade design so the infinity-mirror ARGB lighting remains visible when the unit is mounted as an intake. It ships without a controller, so you must provide your own ARGB hub or motherboard header. The black frame and 25 mm thickness suit standard fan locations in modern chassis. Builders who want a clean light show from the front or bottom panel will appreciate the orientation.

Build integration

Because no controller is included, the fan requires a 5 V ARGB header and a PWM fan header on the motherboard or a separate hub. The reversed blades pull air through the frame while keeping the illuminated side facing inward, freeing you from flipping the unit and hiding the LEDs. Standard 120 mm mounting holes mean it fits any case designed for that size. Buyers who need daisy-chained power and lighting from a single proprietary cable cannot use this version.

Sustained operation

The manufacturer notes that maximum noise is slightly higher and maximum airflow is slightly higher compared with the original UNI FAN SL-INF, indicating the reversed impeller moves more air at the cost of a small acoustic increase. Under continuous load the fan maintains that elevated airflow without a controller to throttle it, so system fan curves should be tuned for the target noise floor. Users who prioritise absolute silence over peak intake performance may prefer the non-reversed model.