Computer case DarkFlash B275 (black) ATX/mATX tower chassis

The DarkFlash B275 (black) is a mid-tower computer case designed for ATX/mATX and ITX-based systems where a compact footprint and clear interior visibility are required. The chassis features tempered glass side panels and an A-pillar-less layout that provides a wide 270° panoramic view of installed components. It supports full-size components within a small tower: graphics cards up to 340 mm, CPU coolers up to 160 mm, an ATX power supply up to 200 mm in length, three SSDs and one HDD, and up to seven 120 mm fans or multiple radiator configurations for liquid cooling.

Advantages

The B275 combines a compact external size with internal expandability, offering a balance between space efficiency and hardware compatibility. Tempered glass panels deliver unobstructed visibility for component presentation and lighting setups, while dust filters and a quick-release panel system simplify maintenance. A variety of fan and radiator mounting locations enables flexible cooling configurations, and front/top I/O provides convenient access to USB-A and audio connections.

Suitable for

• Home and office desktop builds where a compact tower is preferred
• Small-form-factor gaming systems with mid-size GPUs and air or liquid cooling
• Workstation builds that require tidy cable management and visible component layout
• Upgrades where compatibility with ATX power supplies and multiple storage drives is needed

Key specifications

• Supported motherboard standards: mATX, ITX
• External dimensions (H × W × D): 354 mm × 275 mm × 355 mm
• Chassis material: 0.5 mm SPCC steel with tempered glass side panels
• Maximum GPU length: 340 mm
• Maximum CPU cooler height: 160 mm
• Maximum PSU length: 200 mm
• Drive bays: SSD ×3, HDD ×1
• Expansion slots: 5 PCIe slots
• Maximum fan support: up to seven 120 mm fans (various mounting points)
• Fan/radiator mounting options: top 240/280 mm, side 240 mm, bottom 240 mm
• Front/top I/O: USB-A 3.0 ×1, USB-A 2.0 ×2, HD audio, Power and Reset buttons
• Net weight: approx. 4.5 kg
• Color: black

How to use

Install a compatible mATX or ITX motherboard and secure an ATX power supply within the designated compartment. Fit storage drives to the provided SSD/HDD bays and route cables through the available openings for tidy cable management. Mount a graphics card up to 340 mm and install a CPU cooler not exceeding 160 mm in height. Configure case fans or radiators according to the chosen cooling strategy—use the top, side or bottom mounting locations for intake or exhaust as appropriate. Use the quick-release panels for easy access during component installation and maintenance.

Usage recommendations

For balanced airflow, install intake fans at the front/side and exhaust fans at the top/rear, and consider a front or side 240 mm radiator if using liquid cooling. Keep dust filters clean and route cables behind the motherboard tray to maintain unobstructed airflow and reduce internal temperatures.