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Black 120 mm case fan with reverse blades and ARGB lighting

Lian Li

Lian Li UNI FAN SL Flex 120 mm Reverse Blade ARGB Case Fan Black

SKU CH-DHHR-CTDNE

A 120 mm reverse-blade case fan with ARGB lighting and PWM control, sold as a single unit without a controller

  • Fan size120 mm
  • Number of fans1 Fan
  • Fan controlNo Controller
  • Product typeCase Fan
  • Compatible withCase
  • Product colorBlack

Color Black

Model LED Reverse Blade

Model Single Pack

  • Reverse-blade design directs airflow for specialised cooling layouts
  • Infinity-mirror side frame creates layered lighting depth
  • 5 V 3-pin ARGB syncs colours through motherboard software
  • PWM or wireless control simplifies cable routing
  • Single 120 mm fan suits targeted intake or exhaust positions

Single 120 mm Reverse-Blade Fan

The Lian Li UNI FAN SL Flex is a 120 mm case fan with a reverse-blade design and integrated ARGB lighting. A re-designed infinity mirror side frame adds a distinctive visual element. The fan connects via standard PWM and 5V 3-pin ARGB headers for motherboard control.

Builders Using Motherboard Sync

This single pack suits builders who already own a compatible PWM and ARGB header setup or a Lian Li FLEX receiver. It is not suited for buyers who need a controller in the box or who require a multi-fan kit for a larger radiator or case layout.

5V 3-Pin ARGB and PWM Interface

The decisive specification is the 5V 3-pin ARGB connection paired with a standard PWM header. Both must be present on the motherboard or controller for lighting synchronisation and speed regulation to function as intended.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 57% of the 8,339 comparable items (median $19.99).
Fan size 120 mm
Typical for this category: the median of 1,114 items is 120 mm.

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Specifications

Product
Brand nameLian li
Model name12RSL1F1B
Product typeCase Fan
Product colorBlack
Size & build
Fan size120 mm
Number of fans1 Fan
Compatibility
Compatible withCase
More details
Fan controlNo Controller

Other versions of this model

5 more in the same range

Questions about this item

How do I connect the 5V 3-pin ARGB and PWM cables for the 120 mm fan?

Plug the 5V 3-pin ARGB header into the motherboard for lighting control and the PWM header for speed control; the compact FLEX Receiver handles power and RPM reporting.

What maintenance does the infinity mirror side frame need?

Dust the mirror surface with compressed air or a soft brush; no lubrication or disassembly is required for the fan itself.

At what RPM does the reverse-blade 120 mm fan hit its airflow limit under sustained load?

The fan runs up to its rated maximum RPM under PWM control; sustained loads stay within that limit without thermal throttling.

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