---
product_id: 443470298
title: "RUNCCI-YUN 3Pcs USB Fan Speed Controller, DC 5V Stepless Mini USB Fan Governor DC 4-12V to 2.5-8V 5W Regulator Speed Control Knob with Switch"
brand: "runcci-yun"
price: "HK$151"
currency: HKD
in_stock: true
reviews_count: 13
category: "Runcci Yun"
url: https://www.desertcart.hk/products/443470298-runcci-yun-3pcs-usb-fan-speed-controller-dc-5v-stepless
store_origin: HK
region: Hong Kong
---

# 5W power rating Stepless voltage control 2.5-8V USB plug & play compatibility RUNCCI-YUN 3Pcs USB Fan Speed Controller, DC 5V Stepless Mini USB Fan Governor DC 4-12V to 2.5-8V 5W Regulator Speed Control Knob with Switch

**Brand:** runcci-yun
**Price:** HK$151
**Availability:** ✅ In Stock

## Summary

> 🌬️ Master your airflow, master your workspace vibe.

## Quick Answers

- **What is this?** RUNCCI-YUN 3Pcs USB Fan Speed Controller, DC 5V Stepless Mini USB Fan Governor DC 4-12V to 2.5-8V 5W Regulator Speed Control Knob with Switch by runcci-yun
- **How much does it cost?** HK$151 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/443470298-runcci-yun-3pcs-usb-fan-speed-controller-dc-5v-stepless)

## Best For

- runcci-yun enthusiasts

## Why This Product

- Trusted runcci-yun brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Triple Pack Value:** Get 3 controllers in one set to optimize multiple fans or share with your tech-savvy circle.
- • **Built-in On/Off Switch:** Instantly toggle your fan without unplugging—effortless control at your fingertips.
- • **Plug & Play Convenience:** Simply connect to any 5V USB fan and power source—no complicated setup required.
- • **Compact & Durable Design:** Pure copper inner conductor ensures long-lasting performance in a sleek, pocket-sized form factor.
- • **Precision Cooling Control:** Stepless voltage adjustment lets you dial in the perfect breeze from whisper-quiet to refreshing airflow.

## Overview

The RUNCCI-YUN 3Pcs USB Fan Speed Controller offers stepless voltage regulation from 2.5V to 8V, enabling precise fan speed control for any 5V USB fan. With a durable pure copper conductor and a compact design, it supports up to 5W power and includes an integrated on/off switch. This triple pack is perfect for professionals seeking customizable cooling solutions for their workstations or tech setups.

## Description

Product name: Stepless USB Fan Controller USB fan controller Strong / weak wind can be freely adjusted Stepless controller for USB fans Button with switch Note: If you are using the fan with two speed settings, please set the fan to first gear, otherwise it may not be able to adjust the speed. Operating instructions: Suitable for common 5.0V USB fans on the market. Working voltage: DC 4V-12V Output voltage: DC 2.5 ~ 8.0V Nominal power: 5W (do not overload!) Test temperature: -40 ~ 85 ℃ Physical dimensions: 50 * 44 * 18mm

Review: Works great to cool Raspberry Pi PiHole build. - Works great to cool Raspberry Pi PiHole build. Control range is accurate and I am able to control 2 fans per dial.
Review: Controls speed nicely - Great

## Features

- ★ Material: The USB fan controller is made of an electronic accessory, the inner conductor is made of pure copper, it is durable and durable for you.
- ★ Rated power: 5W (please DO NOT overload), suitable for common 5.0V USB fans
- ★ USB fan speed controller: The wind speed of the fan can be adjusted between 2.5V to 8V depending on your convenience
- ★ Instructions for use: Plug the controller into the phone charger or charging treasure, plug the fan USB plug into the controller USB port, and then turn the adjustment knob to adjust the small air volume and large air volume. Turn the knob clockwise To increase the air volume, the air volume is reduced by turning it counterclockwise and the rotary knob has a switching function.
- ★ Package including: 3 pieces * USB fan speed controller

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09L7YM6H5 |
| Best Sellers Rank | 367,331 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 146 in Heater Parts & Accessories |
| Brand | RUNCCI-YUN |
| Colour | Usb &Pwm&3pcs |
| Customer Reviews | 4.4 4.4 out of 5 stars (385) |
| Date First Available | 11 Nov. 2021 |
| Item Weight | 50 g |
| Model Number | R517 |
| Number of Speeds | 2 |
| Power / Wattage | 5 watts |
| Product Dimensions | 4.4 x 1.8 x 5 cm; 50 g |
| Special Features | USB control with voltage control |
| Voltage | 5 Volts |

## Product Details

- **Brand:** RUNCCI-YUN
- **Colour:** Usb &Pwm&3pcs
- **Connector type:** USB
- **Control method:** Touch
- **Controller type:** Mechanical knob, Switch Control
- **Item dimensions L x W x H:** 44 x 18 x 50 millimetres
- **Material:** Copper
- **Mounting type:** Clip-on/Clamp Mount
- **Switch type:** Rotatable / switchable
- **Wattage:** 5 watts

## Images

![RUNCCI-YUN 3Pcs USB Fan Speed Controller, DC 5V Stepless Mini USB Fan Governor DC 4-12V to 2.5-8V 5W Regulator Speed Control Knob with Switch - Image 1](https://m.media-amazon.com/images/I/31CweXNhWJL.jpg)
![RUNCCI-YUN 3Pcs USB Fan Speed Controller, DC 5V Stepless Mini USB Fan Governor DC 4-12V to 2.5-8V 5W Regulator Speed Control Knob with Switch - Image 2](https://m.media-amazon.com/images/I/41LYd2kCHRL.jpg)
![RUNCCI-YUN 3Pcs USB Fan Speed Controller, DC 5V Stepless Mini USB Fan Governor DC 4-12V to 2.5-8V 5W Regulator Speed Control Knob with Switch - Image 3](https://m.media-amazon.com/images/I/41eYw-98RsS.jpg)
![RUNCCI-YUN 3Pcs USB Fan Speed Controller, DC 5V Stepless Mini USB Fan Governor DC 4-12V to 2.5-8V 5W Regulator Speed Control Knob with Switch - Image 4](https://m.media-amazon.com/images/I/51-nz+qSs7L.jpg)
![RUNCCI-YUN 3Pcs USB Fan Speed Controller, DC 5V Stepless Mini USB Fan Governor DC 4-12V to 2.5-8V 5W Regulator Speed Control Knob with Switch - Image 5](https://m.media-amazon.com/images/I/51WFQ9TOf+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great to cool Raspberry Pi PiHole build.
*by C***R on 2 March 2025*

Works great to cool Raspberry Pi PiHole build. Control range is accurate and I am able to control 2 fans per dial.

### ⭐⭐⭐⭐⭐ Controls speed nicely
*by R***R on 3 March 2025*

Great

### ⭐⭐⭐⭐ Works exactly as I wanted but untidy finish to product.
*by C***S on 16 June 2025*

This is really good, most fans come with a speed set too high, for whatever reason manufacturers wont make slow spinning fans, it works as expected, attenuating the power of the fan, spins slower, less noise and dust. Fan speed is not linear with fan performance, as an example, half speed typically loses only about 5-10% performance. My only reason for not giving this 5 stars is that the PCB is exposed, a shell casing would have been nice.

## Frequently Bought Together

- RUNCCI-YUN 3Pcs USB Fan Speed Controller, DC 5V Stepless Mini USB Fan Governor DC 4-12V to 2.5-8V 5W Regulator Speed Control Knob with Switch
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**Shop now:** [https://www.desertcart.hk/products/443470298-runcci-yun-3pcs-usb-fan-speed-controller-dc-5v-stepless](https://www.desertcart.hk/products/443470298-runcci-yun-3pcs-usb-fan-speed-controller-dc-5v-stepless)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-02*