Cooler Master QUBE 340 Black M-ATX Mini-Tower Cabinet
The Cooler Master QUBE 340 Black is a compact Micro-ATX cabinet designed to combine efficient airflow, flexible placement and practical hardware compatibility. Featuring tempered glass, mesh panels, a repositionable I/O panel and support for vertical or horizontal orientation, it offers a versatile foundation for compact gaming and everyday PC builds.
Cooler Master QUBE 340: Compact Design with Flexible Building Options
The Cooler Master QUBE 340 Black is a compact M-ATX mini-tower cabinet built for users who need a space-efficient PC enclosure without compromising essential hardware compatibility. Its SGCC steel construction, tempered glass and mesh elements combine a distinctive appearance with practical ventilation.
Supporting Mini-ITX and Micro-ATX motherboards, the QUBE 340 accommodates graphics cards up to 366mm and CPU coolers up to 178mm in height. Its flexible layout allows the cabinet to be positioned vertically or horizontally, making it suitable for different desk arrangements and workspace requirements.
The repositionable I/O panel, USB Type-C connectivity, multiple fan mounting locations and radiator support make the QUBE 340 a practical choice for compact gaming systems, home PCs and custom DIY builds.
Key Features and Technologies
Compact M-ATX Form Factor
Designed for Micro-ATX and Mini-ITX motherboards, the QUBE 340 offers a compact footprint for space-conscious gaming and desktop PC configurations.
Tempered Glass and Mesh Construction
The SGCC steel, tempered glass and mesh construction combines a clean hardware showcase with ventilation-focused design elements.
Flexible Vertical and Horizontal Placement
The cabinet supports both vertical and horizontal orientation, allowing users to arrange their PC according to available desk space and setup preferences.
Repositionable I/O Panel
The adjustable I/O panel can be positioned to suit the cabinet's orientation, helping keep front connections accessible in different setups.
Flexible Cooling Support
Fan mounting locations at the front, top, rear and bottom provide options for configuring airflow. The cabinet also supports radiators up to 240mm at the front and top.
USB Type-C Connectivity
The front I/O panel features a USB 3.2 Gen 2x2 Type-C port supporting up to 20Gbps, along with two USB 3.2 Gen 1 Type-A ports and a 3.5mm audio combo jack.
Flexible Cooling in a Compact Cabinet
The QUBE 340 supports up to six fan mounting positions across the front, top, rear and bottom. For liquid cooling, users can install radiators up to 240mm at the front or top, or a 120mm radiator at the rear. The cabinet comes with one pre-installed 140mm non-ARGB black rear fan.
Technical Specifications
Specifications are based on manufacturer information. GPU clearance is specified without a front fan installed. PSU clearance depends on whether a bottom fan is installed. Actual compatibility may vary with component dimensions and installation configuration.
Ideal Use Cases
Build a space-efficient gaming desktop with Micro-ATX or Mini-ITX motherboards and compatible graphics cards up to 366mm.
A practical choice for everyday computing, productivity and home workstation setups where compact dimensions are important.
Multiple fan mounting locations and support for compatible 240mm radiators offer flexibility when planning system cooling.
Vertical and horizontal placement options make the cabinet suitable for different desk layouts and workspace arrangements.
Before You Buy or Install
- Confirm that your motherboard is compatible with the supported Mini-ITX or Micro-ATX form factor.
- Check graphics card dimensions. The maximum listed GPU clearance is 366mm without a front fan installed.
- Ensure your CPU air cooler does not exceed the 178mm height limit.
- Check PSU length before installation. The maximum is 200mm without a bottom fan and 140mm with a bottom fan installed.
- The cabinet includes one 140mm non-ARGB black rear fan. Additional fans are not included in the listed pre-installed fan configuration.
- Front and top radiator positions support up to 240mm, while the rear supports a 120mm radiator.
- Check fan, radiator and component dimensions together before planning a custom cooling configuration.
- The USB Type-C port requires a compatible motherboard internal USB header to function.
- The included accessories are listed as one filter and one holder. Confirm the package contents with the seller before purchase.
Frequently Asked Questions
What motherboard sizes are supported by the Cooler Master QUBE 340?
The QUBE 340 supports Micro-ATX and Mini-ITX motherboards, making it suitable for compact desktop and gaming PC builds.
How many fans come pre-installed with the QUBE 340?
The cabinet comes with one pre-installed 140mm non-ARGB black fan at the rear.
What is the maximum graphics card length supported?
The QUBE 340 supports graphics cards up to 366mm in length without a front fan installed. Check your graphics card dimensions before purchasing.
Can I install a 240mm liquid-cooling radiator?
Yes. The cabinet supports 120mm and 240mm radiators at the front and top. The rear supports a 120mm radiator.
Does the Cooler Master QUBE 340 support ATX power supplies?
Yes. It supports ATX power supplies. The maximum PSU length is 200mm without a bottom fan installed and 140mm with a bottom fan installed.
Does the QUBE 340 have a USB Type-C port?
Yes. It features one USB 3.2 Gen 2x2 Type-C port supporting up to 20Gbps, two USB 3.2 Gen 1 Type-A ports and a 3.5mm mic/audio combo jack.
Can the QUBE 340 be placed horizontally?
Yes. The cabinet supports both vertical and horizontal placement, allowing users to adapt it to their desk or workspace layout.
What is the maximum CPU cooler height?
The maximum supported CPU cooler height is 178mm.
What warranty does the Cooler Master QUBE 340 offer?
The manufacturer lists a 2-year warranty. Please confirm the applicable warranty terms with Clarion Computers at the time of purchase.
Build Your Dream PC with Clarion Computers
Choose the Cooler Master QUBE 340 for a compact, flexible PC build. Explore more PC cabinets, cooling solutions and components at Clarion Computers to complete your ideal setup.