Lian Li UNI Fan SL-Infinity 140 Single Pack - Infinity Mirror ARGB Fan

In this review the Lian Li UNI Fan SL-Infinity 140 single pack is evaluated for PC builders who want standout lighting without complex wiring. The bottom line: this fan's all-around infinity mirror effect and dense 40-LED ring deliver one of the most striking visual signatures available in a single 140mm fan, while the daisy-chain cable and one-cable connection simplify installation for multi-fan builds. It suits users who prioritize customizable ARGB looks plus quiet, efficient airflow rather than a cheap, no-frills case fan.

Key Features

• Infinity mirror design: A multi-layer reflective surface highlights the 40 LEDs for a deep, even ring effect visible from many angles.
• Daisy-chain wiring: One cable can connect up to four fans in a cluster, keeping cable management tidy and reducing header clutter.
• Performance optimized blades: The 10% performance improvement raises airflow and static pressure while keeping noise low for better cooling per RPM.
• Modular compatibility: The removable keylock and reversible cable module improve radiator clearance and fit around tight fittings.
• Customizable lighting: Blades and inner frame edges can run individual modes or combined presets for flexible ARGB effects.
• Durable bearing and stop mode: Magnetic Fluid Dynamic Bearing offers long life and a start/stop mode allows the fan to stop completely under low system loads.

Who It's For

This fan is ideal for PC enthusiasts and case modders who want a premium visual centerpiece with high customization. Builders who use ARGB controllers or software and want a clean multi-fan cluster will appreciate the single-cable daisy-chain and pin-to-pad contact point.

It is less suitable for buyers needing the lowest possible price or those who require included fan controllers, since this single pack ships without a controller. Also, if you need extreme high-RPM performance above 1600 RPM, look at specialty high-speed fans instead.

Pros & Cons

Pros

• Striking infinity mirror lighting with 40 LEDs for a premium look.
• Simple cable management via the daisy-chain one-cable design that supports up to four fans.
• Improved airflow and static pressure from optimized blades while remaining comparatively quiet.
• Magnetic Fluid Dynamic Bearing and reversible cable module for durability and fit flexibility.

Cons

• Sold as a single fan without an included controller, so you'll need compatible ARGB control or motherboard headers.
• Top noise is 28 dB at max speed, so it is not inaudible under heavier loads.

Specifications

Fan Dimension	140 x 142 x 25 mm
Fan Speed	200 - 1600 RPM
Max Air Flow	72.7 CFM
Max Air Pressure	2.88 mmH2O
Acoustical Noise (Max)	28 dB
Bearing Type	Magnetic Fluid Dynamic Bearing (FDB)
Input Power	4.56 W (0.15 A fan / 0.6 A LED)

Our Verdict

The UNI Fan SL-Infinity 140 single pack is a strong choice for builders who want eye-catching ARGB that integrates cleanly into multi-fan clusters. With its dense LED ring, daisy-chain wiring, and quieter, more efficient blade design, it delivers great value for those focused on style and manageable installation; just plan for ARGB control as the pack does not include a controller.

Frequently Asked Questions

Does this fan include a controller?
No. This single pack is sold without a controller and requires a compatible ARGB header or separate controller for lighting control.

How many fans can be daisy-chained?
Up to four fans can be connected in a cluster using the one-cable daisy-chain system provided by the design.

Is the fan suitable for radiators?
Yes. The removable keylock and reversible cable module improve compatibility with radiator fittings and tight mounting areas.