---
product_id: 718996977
title: "40mm USB Fan 2pcs, 5V Mini Cooling Brushless Fan with Speed Control"
brand: "amrunje"
price: "₩36444"
currency: KRW
in_stock: true
reviews_count: 8
category: "Am Run Je"
url: https://www.desertcart.kr/products/718996977-40mm-usb-fan-2pcs-5v-mini-cooling-brushless-fan-speed
store_origin: KR
region: South Korea
---

# 5500 RPM high-speed brushless motor 6.12 CFM airflow for efficient cooling Low noise at 25 dBA for quiet operation 40mm USB Fan 2pcs, 5V Mini Cooling Brushless Fan with Speed Control

**Brand:** amrunje
**Price:** ₩36444
**Availability:** ✅ In Stock

## Summary

> 🌬️ Stay cool, stay ahead — tiny fans with mighty impact!

## Quick Answers

- **What is this?** 40mm USB Fan 2pcs, 5V Mini Cooling Brushless Fan with Speed Control by amrunje
- **How much does it cost?** ₩36444 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/718996977-40mm-usb-fan-2pcs-5v-mini-cooling-brushless-fan-speed)

## Best For

- amrunje enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Mini 40mm size fits tight spaces without compromise
- • **Safety First Design:** Protective iron mesh guards your hands while maximizing airflow
- • **Versatile Cooling Solution:** Perfect for laptops, gaming consoles, routers, and even terrariums
- • **Universal USB Compatibility:** Plug & play with any USB port or power bank for ultimate convenience
- • **Dual Fan Set with Speed Control:** Simultaneously manage airflow with included 2-in-1 power cord

## Overview

The AmRunJe 40mm USB Fan 2-pack delivers powerful 6.12 CFM airflow at a rapid 5500 RPM with whisper-quiet 25 dBA noise levels. Designed for compact spaces, these brushless mini fans run on universal 5V USB power and include a dual speed controller and protective mesh, making them the go-to cooling solution for tech enthusiasts and professionals alike.

## Description

Buy AmRunJe 40mm USB Fan 2pcs, 5V Mini Cooling Brushless Fan with Speed Control | 4010 Small Box Fan for PC Computer PlayStation Xbox Router Terrarium Aquarium Welding Helmet Raspberry Pi: Case Fans - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great! - They work just as I need them to. Fairly quiet for what they are and they move a ton of air.
Review: Good - Good

## Features

- Wide Application: perfect for cooling laptop, wifi tower, 3d printer, cable modem, steam deck, vivarium, soldering, power amps, growing mushroom,etc. Ideal for small space cooling and exhaust as a tiny fan
- Usb compatibility: The micro fan can easily draw power from a USB adapter, a power bank, a phone adapter, a game console's USB port, or any USB dapter, making it super convenient to use
- Compact & Mini size: This mini usb fan fits tight spots like computer cases and routers. It's also great for small desk or computer gaps to cool electronics. Heads up: The 40mm fan runs fast for cooling, so it can be a bit noisy
- Extensive accessories: The 5v 40mm fan includes a pair of USB fans, a 2-in-1 power cord for simultaneous control, and a protective iron mesh to keep your hands safe
- Specification: 40 x 40 x 10 mm ( 1.57 x 1.57 x 0.4 in. ) | Rated Voltage : 5V | Airflow: 6.12 ±10%CFM | Noise: 25dBA | Speed: 5500 RPM

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DQY46J34 |
| Air Flow Capacity | 6.12 cfm |
| Best Sellers Rank | #185 in Computer Case Fans |
| Brand | AmRunJe |
| Brand Name | AmRunJe |
| Compatible Devices | Amplifier cabinet incubator computer case vr Gaming Console |
| Cooling Method | Air |
| Customer Reviews | 4.2 out of 5 stars 81 Reviews |
| Included Components | mini usb fan,usb speed controller |
| Item Dimensions L x W x H | 1.57"L x 0.4"W x 1.57"H |
| Item Highlight | 4010 Small Box Fan for PC Computer PlayStation Xbox Router Terrarium Aquarium Welding Helmet Raspberry Pi |
| Manufacturer | AmRunJe |
| Material Type | Plastic |
| Maximum Rotational Speed | 5500 rpm |
| Model | 4010X2S-USB FAN |
| Noise Level | 25 db |
| Number of Items | 2 |
| Number of Packs | 2 |
| Part Number | 4010X2S-USB FAN |
| Power Connector Type | USB |
| Product Dimensions | 1.57"L x 0.4"W x 1.57"H |
| Unit Count | 2 Count |
| Voltage | 5 volts |

## Product Details

- **Air Flow Capacity:** 6.12 cfm
- **Brand:** AmRunJe
- **Compatible Devices:** Amplifier cabinet incubator computer case vr Gaming Console
- **Cooling Method:** Air
- **Material:** Plastic
- **Maximum Rotational Speed:** 5500 rpm
- **Noise Level:** 25 db
- **Power Connector Type:** USB
- **Product Dimensions:** 1.57"L x 0.4"W x 1.57"H
- **Voltage:** 5 volts

## Images

![40mm USB Fan 2pcs, 5V Mini Cooling Brushless Fan with Speed Control - Image 1](https://m.media-amazon.com/images/I/71c+suFetdL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great!
*by E***H on June 28, 2026*

They work just as I need them to. Fairly quiet for what they are and they move a ton of air.

### ⭐⭐⭐⭐⭐ Good
*by T***T on August 6, 2026*

Good

### ⭐⭐⭐⭐⭐ Helps cool fanless switches.
*by J***. on August 23, 2026*

Works perfectly helping cool those hot-running fanless UniFi Gen1 150w 8 and 16 port Poe switches. Mount the switch vertically and place these fans on the vents with a bit of tape. Internal temps go down from 70c to 50c reliably.

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**Shop now:** [https://www.desertcart.kr/products/718996977-40mm-usb-fan-2pcs-5v-mini-cooling-brushless-fan-speed](https://www.desertcart.kr/products/718996977-40mm-usb-fan-2pcs-5v-mini-cooling-brushless-fan-speed)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-10-12*