---
product_id: 253226810
title: "Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00)"
brand: "cooler master"
price: "113541 Ft"
currency: HUF
in_stock: true
reviews_count: 8
category: "Cooler Master"
url: https://www.desertcart.hu/products/253226810-cooler-master-masterbox-q300l-micro-atx-tower-with-magnetic-design
store_origin: HU
region: Hungary
---

# 6-position adjustable I/O panel Magnetic dust filter for pristine airflow Edge-to-edge transparent acrylic side panel Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00)

**Brand:** cooler master
**Price:** 113541 Ft
**Availability:** ✅ In Stock

## Summary

> 🖤 Master your space with the Q300L — small footprint, big impact.

## Quick Answers

- **What is this?** Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00) by cooler master
- **How much does it cost?** 113541 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/253226810-cooler-master-masterbox-q300l-micro-atx-tower-with-magnetic-design)

## Best For

- cooler master enthusiasts

## Why This Product

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

## Key Features

- • **Showcase Your Build:** Crystal-clear acrylic side panel offers a full panoramic view of your components and RGB lighting.
- • **Compact Yet Spacious:** Micro-ATX form factor supports full-size ATX power supplies and GPUs up to 360mm without compromise.
- • **Clean & Tidy Aesthetic:** 28mm cable management space behind motherboard tray ensures a clutter-free, professional build.
- • **Modular I/O Flexibility:** Customize your setup with 6 adjustable I/O panel positions for ultimate desk ergonomics.
- • **Optimized Cooling Performance:** Open perforated front, top, and bottom combined with magnetic dust filters keep your system cool and clean.

## Overview

The Cooler Master MasterBox Q300L is a versatile Micro-ATX tower designed for professionals and enthusiasts who demand modularity and style. Featuring a fully adjustable 6-position I/O panel, a transparent acrylic side panel for showcasing your build, and magnetic dust filters for superior airflow, it supports full-size ATX power supplies and large GPUs in a compact form factor. Its smart cable management and excellent ventilation make it perfect for sleek, high-performance setups at home or office.

## Description

From the manufacturer MasterBox Q300L Make It Yours. We're all about the things that make building a PC such a rewarding experience. The sense of achievement. The joy of making and creating something uniquely yours in form and function and, of course, the thrill of bringing your creation to life without melting your components. Choose Your Style The MasterBox Q300L is your straightforward option in the MasterBox Q-series from Cooler Master, a series that might be small in size but excels in functionality, modularity, and thermal performance. The combination of a practical design and the unique customizable aesthetic makes the Q300L the perfect choice for office and home use. Magnetic Dust Filters 6-Orientation I/O Panel Edge-to-Edge Acrylic Side Panel Clean Routing Space Small Form Factor, ATX PSU Support Excellent Thermal Performance System Flexibility 6-orientation I/O panel—both sides: front, top, and bottom. Show off your build through the full-size transparent side panel. 28 mm of open space for hidden cable management. Despite the Micro-ATX form factor and the body depth/height of only 370 x 370 mm, the Q300L can accommodate a normal ATX PSU.

Review: Micro Case with ATX Mobo - Best casing I ever bought. Small and light. My gigabyte 1080 fit this inside and still more space inside.
Review: Deserve 1 star - At least they answered me well, but the product was not I expected

## Features

- I/O panel can be adjusted in 6 different locations and the Case can be positioned: Vertical or horizontal
- Edge to edge acrylic transparent side panel offers a full view inside
- Body depth height: Can support normal size ATX power supply
- Front magnetic design dust filter with open perforated front, top and bottom for high air performance
- Extra space behind the motherboard tray for hidden cable management.Motherboard Support: Micro ATX, Mini ITX, CPU Cooler: 159mm/6.2", GPU 360mm, Radiator Support Front: 120mm/240mm, Rear: 120mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0785GRMPG |
| Antenna Location | Gaming, General Computing |
| Best Sellers Rank | #46,490 in Computers ( See Top 100 in Computers ) #322 in Computer Cases |
| Brand | Cooler Master |
| Built-In Media | 1 computer case |
| Case Type | Mini-Tower |
| Case type | Mini-Tower |
| Color | Black |
| Colour | Black |
| Compatible Devices | Micro-ATX and Mini-ITX motherboards, Cooler Master devices |
| Cooling Method | Fan |
| Customer Reviews | 4.5 out of 5 stars 13,618 Reviews |
| Enclosure Material | Alloy Steel Plastic |
| Fan Size | 120 Millimeters |
| Global Trade Identification Number | 00884102038006, 00884102095313, 04719512065488 |
| Hard Disk Form Factor | 3.5 Inches |
| Internal Bays Quantity | 1 |
| Item Dimensions D x W x H | 39.1D x 23W x 38.1H centimeters |
| Item Type Name | grocery |
| Item Weight | 480 Grams |
| Manufacturer | Cooler Master |
| Material | Alloy Steel Plastic |
| Mfr Part Number | MCB-Q300L-KANN-S00 |
| Model Name | Q300L |
| Model Number | MCB-Q300L-KANN-S00 |
| Motherboard compatability | Micro-ATX and Mini-ITX |
| Number of Fans | 3 |
| Other Special Features of the Product | Magnetic Dust Filters |
| Power Supply Maximum Output | 500 Watts |
| Power Supply Mounting Type | Bottom Mount |
| Recommended uses for product | Gaming, General Computing |
| Supported Motherboard | Micro-ATX and Mini-ITX |
| Total Expansion Slots Quantity | 4 |
| Total USB 3.0 Ports | 2 |
| Total Usb Ports | 2 |
| UPC | 884102095313 884102038006 |

## Product Details

- **Brand:** Cooler Master
- **Case type:** Mini-Tower
- **Colour:** Black
- **Motherboard compatability:** Micro-ATX and Mini-ITX
- **Recommended uses for product:** Gaming, General Computing

## Images

![Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00) - Image 1](https://m.media-amazon.com/images/I/91UOdM9izhL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does it come with screws? Motherboard Standoffs??**
A: Yes, they are included in the case.

**Q: Does it come with a psu?**
A: NO

**Q: Will it support msi proseries b450-a pro max?**
A: Yes as it is matx which means micro atx

**Q: Does the masterbox lite 3.1 tg come with fans**
A: No

## Customer Reviews

### ⭐⭐⭐⭐⭐ Micro Case with ATX Mobo
*by E***O on 22 January 2022*

Best casing I ever bought. Small and light. My gigabyte 1080 fit this inside and still more space inside.

### ⭐ Deserve 1 star
*by S***A on 6 February 2026*

At least they answered me well, but the product was not I expected

### ⭐⭐⭐⭐⭐ Good product for best price
*by I***A on 12 August 2021*

What a nice casing and gave a good image for my old pc

## Frequently Bought Together

- Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00)
- AMD Ryzen 5 5500 6-Core, 12-Thread Unlocked Desktop Processor with Wraith Stealth Cooler
- Thermaltake Smart 500W 80+ White Certified PSU, Continuous Power with 120mm Ultra Quiet Cooling Fan, ATX 12V V2.3/EPS 12V Active PFC Power Supply PS-SPD-0500NPCWUS-W

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-07-07*