Cooler Master MasterBox Q300L Micro-ATX Tower Case, Black, Alloy Steel, Transparent Side Panel, Adjustable I/O, Model MCB-Q300L-KANN-S00

★★★★★ 4.9 71 reviews

US$21.57
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US$21.57
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Product details

Management number 241562564 Release Date 2026/07/18 List Price US$21.57 Model Number 241562564
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The Master Box Q300L by Cooler Master is a compact micro-ATX case designed for users seeking an efficient and versatile solution for their computing needs. Ideal for both office and home environments, this case balances aesthetics with functionality, making it a perfect choice for building a powerful system without compromising on space.

The Master Box Q300L is constructed from durable alloy steel, ensuring longevity and reliable performance. Its innovative cube design not only enhances its visual appeal but also optimizes airflow, promoting effective thermal management. The modular I/O panel can be repositioned in six different locations, allowing users to customize their setup based on their preferences and space requirements. Notably, this case supports standard ATX power supplies, which is uncommon for its size, providing flexibility in component selection.

Key Features:
  • Magnetic Dust Filters: The unique pattern of the dust filter not only adds a distinctive look but also enhances functionality by keeping your components clean.
  • Components Clearance: Accommodates CPU coolers with a maximum height of 159mm, GPU cards up to 360mm, and a PSU up to 160mm in length, allowing for versatile component choices.
  • Versatile Cooling: Supports a 240mm liquid cooler and up to five fans, maximizing cooling performance for high-demand systems.
  • Modular I/O Panel: Flexible positioning options at the front, top, or bottom on both sides cater to various user preferences.
  • Edge-To-Edge Panel: The transparent side panel showcases your meticulous build, offering a clear view of your components.
  • Open Thermal Design: The perforated design on all sides promotes optimal airflow and heat dissipation, essential for maintaining system performance.
  • Ample Interior: Offers sufficient space for Micro-ATX or Mini-ITX motherboards, ensuring easy assembly and future upgrades.

The Master Box Q300L is an excellent choice for gamers, content creators, and professionals looking to build a compact yet powerful system. With its thoughtful design and robust features, this case provides a reliable foundation for any computing setup while enhancing your workspace's aesthetics.


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