---
product_id: 515277473
title: "DB04028B12U 40mm Fan 4cm 4028 40x40x28mm 12V 0.66A Dual Ball Bearing 4-Wire 4pin PWM Server Power Airflow Coo"
brand: "coco"
price: "21036 Ft"
currency: HUF
in_stock: false
url: https://www.desertcart.hu/products/515277473-db04028b12u-40mm-fan-4cm-4028-40x40x28mm-12v-0-66a-dual
store_origin: HU
region: Hungary
---

# 12V power efficiency 23.78 CFM airflow Dual ball bearing durability DB04028B12U 40mm Fan 4cm 4028 40x40x28mm 12V 0.66A Dual Ball Bearing 4-Wire 4pin PWM Server Power Airflow Coo

**Brand:** coco
**Price:** 21036 Ft
**Availability:** ❌ Out of Stock

## Summary

> 🌀 Power your system with precision airflow and silent strength!

## Quick Answers

- **What is this?** DB04028B12U 40mm Fan 4cm 4028 40x40x28mm 12V 0.66A Dual Ball Bearing 4-Wire 4pin PWM Server Power Airflow Coo by coco
- **How much does it cost?** 21036 Ft with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/515277473-db04028b12u-40mm-fan-4cm-4028-40x40x28mm-12v-0-66a-dual)

## Best For

- coco enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Powerful:** 40x40x28mm size delivers impressive 23.78 CFM airflow in tight spaces
- • **Whisper-Quiet Operation:** Operates at just 54 dB—stay cool without the noise distraction
- • **Robust Dual Ball Bearings:** Engineered for longevity and stable performance under continuous load
- • **Precision 4-Wire PWM Control:** Seamlessly adjust fan speed for optimal cooling and quiet operation
- • **Plug-and-Play 4-Pin Interface:** Easy integration with modern server and PC motherboards for instant setup

## Overview

The DB04028B12U is a compact 40mm cooling fan featuring a durable dual ball bearing design, 12V power input, and a 4-wire PWM interface for precise speed control. Delivering 23.78 CFM airflow at a low noise level of 54 dB, it’s engineered for reliable, quiet cooling in servers and compact PC builds.

## Description

Model DB04028B12U Size 40¡Á40¡Á28mm Bearing: Double ball bearing Interface 4-wire interface Voltage: 12V Current: 0.66A Power: 7.92W Operating voltage: 7.0-13.4V Speed up to 15000RPM¡À10% Radiator noise 54 dB Maximum air volume: 23.78 CFM (cubic feet per minute)=0.673 m3/min (m3/min) Maximum wind pressure: 1.32 inH2O (inch/water) = 33.65 mmH2O (mm/water) Fan life 70000 hours

## Features

- Model DB04028B12U
- Bearing: Double ball bearing
- Voltage: 12V
- Current: 0.66A
- Interface 4-wire interface

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | COCO |
| Part number | C0149 |
| Item Weight | 227 g |
| Product Dimensions | 4 x 2.8 x 4 cm; 227 g |
| Item model number | C0149 |
| Material | Plastic |
| Voltage | 12 Volts |
| Wattage | 7.92 watts |
| Air Flow Capacity | 23.78 Cubic Feet Per Minute |
| Noise Level | 54 dB |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Product dimensions:** 40L x 28W x 40H millimetres
- **Brand:** COCO
- **Power connector type:** 4-Pin
- **Voltage:** 12 Volts
- **Wattage:** 7.92 watts
- **Cooling method:** Air
- **Compatible devices:** Server
- **Noise level:** 54 dB
- **Material:** Plastic
- **Maximum rotational speed:** 15000 RPM

## Images

![DB04028B12U 40mm Fan 4cm 4028 40x40x28mm 12V 0.66A Dual Ball Bearing 4-Wire 4pin PWM Server Power Airflow Coo - Image 1](https://m.media-amazon.com/images/I/61tGwEiq7-L.jpg)
![DB04028B12U 40mm Fan 4cm 4028 40x40x28mm 12V 0.66A Dual Ball Bearing 4-Wire 4pin PWM Server Power Airflow Coo - Image 2](https://m.media-amazon.com/images/I/51v1+cuB-oL.jpg)
![DB04028B12U 40mm Fan 4cm 4028 40x40x28mm 12V 0.66A Dual Ball Bearing 4-Wire 4pin PWM Server Power Airflow Coo - Image 3](https://m.media-amazon.com/images/I/51EORgrbhbL.jpg)

## Questions & Answers

**Q: which wire is positive?**
A: Wiring is in the order:
1. GROUND - Typically Black
2. +VDC - Typically Red
3. SENSE
4. PWM
Wire color can help you in identifying the starting pin number.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.hu/products/515277473-db04028b12u-40mm-fan-4cm-4028-40x40x28mm-12v-0-66a-dual](https://www.desertcart.hu/products/515277473-db04028b12u-40mm-fan-4cm-4028-40x40x28mm-12v-0-66a-dual)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-01-31*