# Lian Li UNI HUB SL V2: mapping fan and lighting USB commands

> The Lian Li UNI HUB SL V2 reference reconstructs the controller's USB HID commands for fan duty, RPM reporting, LED effects and motherboard passthrough. It compares an L-Connect 3 USB capture with independent tests on one hub and records report layouts, command sequences and timing.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/immortalbob/lian-li-uni-fan-sl-v2-protocol>
- Primary source: <https://github.com/immortalbob/lian-li-uni-fan-sl-v2-protocol/blob/d25a49b240c533264cf6f8b5e652bd2cb4aab3cc/lianli-uni-hub-sl-v2.md>
- Catalog page: <https://awesomerea.org/resources/lian-li-uni-hub-sl-v2-protocol-case/>
- Record JSON: <https://awesomerea.org/resources/lian-li-uni-hub-sl-v2-protocol-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/lian-li-uni-hub-sl-v2-protocol-case/index.md)

## Requirements & limits

- **Scope:** Observations concern a 0CF2:A105 hub with firmware v0.7 and twelve 120 mm UNI FAN SL V2 fans.
- **Limits:** Other firmware versions, 0CF2:A103 and 140 mm fans were not observed.
- **License:** CC BY 4.0; attribution is required.

## Primary sources

1. <https://github.com/immortalbob/lian-li-uni-fan-sl-v2-protocol/blob/d25a49b240c533264cf6f8b5e652bd2cb4aab3cc/lianli-uni-hub-sl-v2.md>
2. <https://github.com/immortalbob/lian-li-uni-fan-sl-v2-protocol/blob/d25a49b240c533264cf6f8b5e652bd2cb4aab3cc/README.md>
3. <https://github.com/immortalbob/lian-li-uni-fan-sl-v2-protocol/blob/d25a49b240c533264cf6f8b5e652bd2cb4aab3cc/LICENSE>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.