Lian Li UNI FAN SL Flex 120 mm Reverse Blade ARGB White

Single 120 mm reverse-blade ARGB fan

This single white case fan uses a reverse-blade design to push air in the opposite direction of standard fans. It targets builders who need a specific airflow pattern for radiator push-pull setups or unconventional case layouts. The unit ships without a controller, so it is intended for users who already own a compatible Lian Li wireless receiver or plan to drive it directly from a motherboard header. It is not suited for buyers who want a complete plug-and-play kit with a hub included.

Infinity-mirror frame with 5 V 3-pin ARGB

The redesigned infinity-mirror side frame creates a layered lighting effect visible from the side of the fan. A 5 V 3-pin ARGB connector lets motherboard software control the LEDs while a PWM lead handles speed regulation. The FLEX receiver architecture supports both L-Connect 3 wireless control and direct motherboard synchronisation, reducing cable clutter when paired with the appropriate hub. Daily use means managing lighting and curves through either the motherboard ecosystem or the Lian Li app depending on which receiver is present.

Check motherboard headers and receiver ownership

Verify that your motherboard has a spare 5 V 3-pin ARGB header and a 4-pin PWM header if you intend to run the fan without a Lian Li wireless receiver. Confirm the airflow direction matches your cooling plan, as the reverse blades move air opposite to conventional fans. Ensure you already possess a compatible FLEX, SL Wireless or CL Wireless receiver, because none is bundled. Buyers who need a second card or additional mounting hardware should source those separately.