Lian Li SL Infinity Flex 120 Uni Fan ARGB Reverse PWM 120mm White

The Lian Li UNI FAN SL-INF FLEX 120 Reverse ARGB is a 120mm case fan designed to combine efficient cooling, customisable RGB illumination and flexible installation for gaming PCs and enthusiast builds. Featuring a fluid dynamic bearing (FDB) and an optimised aerodynamic design, the reverse blade configuration allows the fan to provide intake airflow while keeping its visually appealing side facing the interior of the case, making it ideal for showcase systems with carefully planned airflow layouts. Operating at speeds of up to 2200 RPM, the fan delivers airflow of up to 65.7 CFM and static pressure of 2.85 mmH2O, with a maximum noise level of 31 dBA. Its distinctive infinity-mirror design incorporates 58 LEDs across three independently controllable lighting zones, illuminating the fan blades, side infinity mirrors and frame edges to create layered lighting effects from different viewing angles. The dual sided frame features asymmetrical styling, while the FLEX mechanism allows the fan frame orientation to be adjusted without changing the original connection direction, providing greater installation flexibility and helping simplify cable management. PWM fan speed control, L-Connect 3 software and compatible 5V 3-pin ARGB motherboard synchronisation provide flexible control over cooling performance and lighting effects. Measuring 120 x 124 x 28mm, this reverse blade single fan model is suited to individual fan replacements, intake cooling and custom PC configurations where airflow direction, coordinated lighting and a clean internal appearance are important.

Features

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Uni Fan SL-INF Flex 120

• 120 mm modular LED reverse fan.
• Three-zone ARGB lighting with fan blade, side infinity mirror, and edge lighting effects.
• Dual-sided frame design with asymmetrical infinity-mirror styling for a dimensional RGB look.
• Supports L-Connect 3, motherboard ARGB sync, and PWM fan control.
• FDB bearing and optimised fan design deliver strong, quiet cooling performance.

Next-Gen Connections, Endless Flexibility - ARGB

• 3 Control Modes
• 1.8”LCD Display
• Three Light Zones
• Infinity Mirror
• Two Different Designs
• FDB Bearing
• L-Wireless Sync
• Support MB Control

Note: Existing UNI FAN SL-INF Wireless fans can be used with the SL-INF FLEX Receiver, allowing users to expand or upgrade their setup without purchasing additional fans or another L-Wireless Receiver.

Asymmetrical Design, Infinite Depth

The SL-INF FLEX series features a dual-sided frame design, with an angled pattern on one side and a dual-rectangle design on the other. Layered lighting effects create a richer, more dimensional visual experience.

Three Zones, Endless Brilliance

The SL-INF FLEX series features three independently controlled lighting zones, each delivering its own unique visual effect. With dual-sided frame lighting and a central infinity mirror, it creates a full-range RGB showcase from every angle.

• ZONE 1: Fan blades and central hub infinity mirror
• ZONE 2: Outer edges of the dual-side infinity mirrors and side light strips
• ZONE 3: Inner edge of the side infinity mirror

Enhanced Bearing Design

A newly engineered oil retention groove (shown in red) around the fan bearing helps keep lubricant precisely where it’s needed, ensuring consistent lubrication for reduced friction, quieter operation, and long-term bearing reliability.

Flexible Control, Your Way

Using the included cables, the FLEX Series supports both L-Connect 3 and motherboard control, giving you the flexibility to choose the control mode that best fits your setup.

Control More, Cable Less

Connect both the 4-Pin PWM and 5V 3-Pin ARGB cables to your motherboard, then pair with the L-Wireless Controller for flexible fan speed and lighting control. 

Note: The L-Wireless Controller is optional for L-Connect 3 software control, but required for Wireless Mode. 

Connect the 5V 3-Pin ARGB cable to unify fan lighting with your motherboard RGB ecosystem, bringing a cohesive visual style while preserving flexible fan speed control.

Built for Motherboard Sync

Control fan speed and lighting through the motherboard BIOS or motherboard software without a wireless controller. 

Note: The L-Wireless Receiver has a single connection port. Use either the 5V 3-Pin ARGB cable or the USB 2.0 cable.

(MB Software Controls Lighting & Fan Speed).

Longer redesigned cables make routing cleaner and cable management easier.

• SL INF FLEX LED Receiver - 550+200mm
• FLEX Receiver 5V 3-Pin ARGB Cable - 650mm

Engineered for Performance, Built for Cooling

Featuring FDB bearings and an optimised aerodynamic design, the SL-INF FLEX series delivers powerful airflow, high static pressure, and quiet operation, keeping demanding systems cool without compromising acoustics.

One Controller, Complete Control

Driven by 2.4GHz wireless technology, one L-Wireless Controller unifies up to 10 groups of compatible LIAN LI devices through a compact rear I/O USB receiver and dedicated PWM receivers, creating a cleaner, more streamlined wireless ecosystem.

• Wireless Series
• Strimmer Series
• Hydroshift II Series
• Flex Series

Note: Each controller supports up to 10 channels and is compatible with all UNI FAN Wireless Series products, including TL FLEX, SL-INF FLEX, STRIMER WIRELESS, and UNI FAN SL Wireless. Support for additional products will be added in future updates.

Exclusive Software, Complete Customisation

With L-Connect 3, lighting effects and fan curves are fully within your control. Built-in presets and customisable profiles let you fine-tune every detail and create a system that reflects your style.

Custom Device Naming

Customise fan names and drag to rearrange their order, making it easy to build smooth, personalised lighting flows that match your setup.

Visual Identification, Easy Pairing

Pair fans in seconds through L-Connect 3. Quickly locate each fan with Device Finder, or bind all detected devices at once for a faster, smoother setup.