---
product_id: 486110422
title: "NNL DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM"
brand: "nnl"
price: "70.72 DT"
currency: TND
in_stock: true
category: "Nnl"
url: https://www.desertcart.tn/products/486110422-nnl-dbtb0428b2g-40mm-powerful-cooling-fan-for-avc-4028-12v
store_origin: TN
region: Tunisia
---

# 19.4 CFM powerful airflow Dual ball bearing for durability 18000 RPM max speed NNL DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM

**Brand:** nnl
**Price:** 70.72 DT
**Availability:** ✅ In Stock

## Summary

> 💨 Cool your tech, rule your workspace.

## Quick Answers

- **What is this?** NNL DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM by nnl
- **How much does it cost?** 70.72 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/486110422-nnl-dbtb0428b2g-40mm-powerful-cooling-fan-for-avc-4028-12v)

## Best For

- nnl enthusiasts

## Why This Product

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

## Key Features

- • **Blazing 18,000 RPM Speed:** Experience ultra-fast cooling that keeps your server running at peak performance without overheating.
- • **Precision Dual Ball Bearings:** Engineered for longevity and whisper-quiet operation, ensuring your workspace stays cool and distraction-free.
- • **Robust 4-Wire 4-Pin Interface:** Enables precise speed monitoring and control, perfect for tech-savvy professionals demanding reliability.
- • **Smart PWM Temperature Control:** Adaptive fan speed adjusts automatically to your system’s needs, optimizing energy use and noise levels.
- • **Compact Yet Mighty 40x40x28mm Design:** Fits seamlessly into tight server spaces while delivering maximum airflow efficiency.

## Overview

The NNL DBTB0428B2G is a high-performance 40mm cooling fan designed for servers, featuring a powerful 18000 RPM motor, 19.4 CFM airflow, and durable dual ball bearings. Its 4-wire PWM interface allows intelligent temperature-based speed control, making it an ideal choice for professionals seeking efficient, quiet, and reliable cooling in compact spaces.

## Description

Bearing: high precision double ball bearing Model: DBTB0428B2G Dimensions: 40 x 40 x 28mm side length 4cm thickness 2.8cm Rated voltage: 12V Current: 1.0A high speed violent large air volume fan Interface: 4 wires (25cm) Speed: 18000 RPM full speed Air volume: 19.4cfm Additional functions: PWM intelligent temperature control and speed measu

## Features

- Model: DBTB0428B2G
- Bearing: high precision double ball bearing
- Current: 1.0A high speed violent large air volume fan
- Dimensions: 40 x 40 x 28mm side length 4cm thickness 2.8cm
- Additional functions: PWM intelligent temperature control and speed measu

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Air Flow Capacity | 19.4 cfm |
| Asin | B0B7814RQD |
| Best Sellers Rank | #985 in Computer Case Fans |
| Brand Name | NNL |
| Compatible Devices | Server |
| Cooling Method | Air |
| Customer Reviews | 4.4 4.4 out of 5 stars (47) 4.4 out of 5 stars |
| Item Dimensions L X W X H | 1.1"L x 1.57"W x 1.57"H |
| Item Weight | 100 g |
| Manufacturer | NNL |
| Material Type | Copper |
| Maximum Rotational Speed | 18000 rpm |
| Model | NNL-128 |
| Noise Level | 25 db |
| Number Of Items | 1 |
| Part Number | NNL-128 |
| Power Connector Type | 4-Pin |
| Unit Count | 1 Count |
| Upc | 768481474184 |
| Voltage | 12 volts |
| Wattage | 3 watts |

## Product Details

- **Brand:** NNL
- **Compatible Devices:** Server
- **Cooling Method:** Air
- **Material:** Copper
- **Maximum Rotational Speed:** 18000 RPM
- **Noise Level:** 25 Decibels
- **Power Connector Type:** 4-Pin
- **Product Dimensions:** 1.1"L x 1.57"W x 1.57"H
- **Voltage:** 12 Volts
- **Wattage:** 3 watts

## Images

![NNL DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM - Image 1](https://m.media-amazon.com/images/I/51hIm0EgP+L.jpg)

## Frequently Bought Together

- NNL DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM
- ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black
- DB04028B12U 40mm Fan 4cm 4028 40x40x28mm 12V 0.66A Dual Ball Bearing 4-Wire 4pin PWM Server Power Airflow Coo

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-30*