This article covers Lian Li UNI SL140 RGB x1 140mm ARGB.

Overview

The Lian Li UNI SL140 RGB is a 140mm addressable RGB fan that stands out for its patented daisy-chain interlocking mechanism. This single-pack version (x1) lets you add one fan to an existing setup without buying a full three-pack. Rated at up to 1900 RPM with a noise level of 30 dBA, it strikes a solid balance between airflow and acoustics. The ARGB lighting can be controlled via a compatible motherboard 5V header or through Lian Li's optional UNI HUB controller. It's positioned as a mid-to-high-tier cooling solution for builders who prioritize clean aesthetics and simplified cable management.

Compatibility Guide

The UNI SL140 RGB uses a standard 140mm square frame (140 x 140 x 25mm) with standard 84.5mm mounting hole spacing, so it fits in virtually any case that accepts 140mm fans. However, because the interlocking design relies on specific alignment tabs, you cannot mix UNI fans with non-UNI fans in the same physical chain. Each fan draws power and PWM control through a single connected cable, which reduces clutter dramatically. If you plan to control multiple daisy-chained fans individually, you will need Lian Li's UNI HUB; otherwise, a single PWM header can drive the whole chain together. Note that the ARGB signal uses a 5V 3-pin header, so do not connect it to a 12V RGB header.

Product Info

Lian Li released the UNI SL140 RGB in late 2020 as part of its UNI Fan series. The single-pack retails for around ¥2,000–¥2,500 depending on the retailer, placing it in the mid-to-high price tier for 140mm fans. Key specs include a max airflow of 64.5 CFM, static pressure of 2.59 mmH2O, and a rated noise level of 30 dBA. Warranty is typically two years (check with your retailer). It's widely available on Japan and major PC component stores.

Best Use Cases

RGB-centric builders who value visual aesthetics: The interlocking design virtually eliminates fan cables, making for a super-clean interior. If pure silence is your priority, consider Noctua or be quiet! alternatives instead. Users building a multi-fan push/pull configuration: Daisy-chaining several UNI SL140s means only one PWM and one ARGB cable run back to the motherboard or hub, saving space and improving airflow pathing. Avoid chaining more than four fans on one signal to prevent signal degradation. * Upgraders who already own UNI SL120/SL140 triple packs: If you already have a UNI HUB from a triple pack, buying a single-pack SL140 is a cost-effective way to add one exhaust or intake fan without buying another three-pack. ## Alternatives
Two strong competitors in the same price-and-performance bracket are the Noctua NF-A14 PWM (≈¥2,500) and the be quiet! Silent Wings 3 140mm PWM (≈¥2,200). Noctua offers legendary low noise and long-term reliability but lacks RGB and interlocking. be quiet! delivers excellent acoustic performance and a sleek black design but also lacks daisy-chain capability. The UNI SL140 is the only choice if you need cable-free linking and integrated ARGB.

Things to Consider

If you buy the single-pack version, note that the UNI HUB controller is not included; it only ships with the triple-pack (SL140-3B). To control ARGB and fan speed from a central point, you will need a separate UNI HUB or a compatible motherboard header. Additionally, the interlocking mechanism is sturdy but can be difficult to disassemble once connected, making frequent fan swaps inconvenient. At full 1900 RPM speed, noise reaches 30 dBA, which is not silent; if you want near-inaudible operation at low loads, look at fans with a true 0 RPM mode. Lastly, the fan blades are not removable for cleaning, so dust accumulation will require compressed air. ## FAQ Q: Can I use the UNI HUB with a single-pack UNI SL140? A: No, the UNI HUB is only included with the triple-pack kit (SL140-3B). You can buy the hub separately (Lian Li UNI HUB SL) or use motherboard PWM and ARGB headers directly. Q: Will this fan fit on a 280mm AIO radiator? A: Yes, a 140mm fan is the correct size for a 280mm radiator (two 140mm fans). The UNI SL140's static pressure of 2.59 mmH2O is sufficient for most standard AIO radiators, though not as high as dedicated radiator fans. Q: Is the single-pack fan the same as those in the three-pack? A: Yes, the fan unit itself is identical — the only difference is the accessories included (single-pack has cables for one fan; triple-pack includes the hub and remote).

Product Disclosure (Amazon)

  • Manufacturer: Lian Li
  • Seller: BUYROBINバイロビン
  • Fulfilled by: BUYROBINバイロビン
  • ASIN: B08R14F9ZX
  • Note: This article covers a manufacturer-made product based on Amazon listing details.