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)
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)
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Cooler Master

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)

Key item features

  • Compact Design: The MasterBox Q300L is a small-sized Micro-ATX tower that excels in functionality and modularity.
  • Standard ATX PSU: Despite its compact size, it supports a standard ATX power supply unit, which is uncommon for cases of this size.
  • Adjustable I/O Panel: The I/O panel can be adjusted to six different locations, offering three options on each side of the case for flexible system setup.
  • Magnetic Dust Filter: Features a special pattern design on the magnetic dust filter, enhancing both aesthetics and practicality.
  • Transparent Side Panel: Equipped with a transparent acrylic side panel, allowing for a clear view of the internal components.
  • Enhanced Airflow: Fully ventilated design ensures optimal thermal performance, making it suitable for both office and home use.
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4.596516231195566 stars out of 5, based on 6315 seller reviews(4.6)
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4.4 out of 5 stars
stars17 ratings11 reviews
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  1. 5 stars76% (13)
  2. 4 stars6% (1)
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  4. 2 stars12% (2)
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Showing 1-3 of 11 reviews

Jan 4, 2026
Kevin
Sold and shipped byNewegg Inc.
5 out of 5 stars review

Verified Purchase

Cooler Master Q300L

It's lowkey very good for budget wise especially if you tryna just build a budget or a secondary streaming pc most definitely I the filters are a cool design I recommend the q300 v2

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Mar 14, 2025
WinnerWinner
Sold and shipped byNewegg Inc.
5 out of 5 stars review

Verified Purchase

would recommend

fantastic for the price althought i had a chesp prebuilt computer that id been slowly upgrading it is still impressive to me that swapping everything to this case gave me a 20 degree drop in cpu temps

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Jul 30, 2023
Vince
Sold byNewegg Inc.
5 out of 5 stars review

Verified Purchase

Very satisfied. 100% recommend!

The case was easy enough to assemble and has plenty of room to hide wires! The feet on the bottom could be a little taller to provide better airflow but I have had zero issues and would only take 5 mins if I wanted to change it myself. If you are using any sort of RGB lighting or just like the look of spinning fans I 100% recommend this case, especially for the price!

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