Jonsplus BO400 Midi Tower ATX Computer Case Black

The Jonsplus BO400 Midi Tower ATX Black is a mid-tower computer case designed for standard ATX, Micro-ATX and Mini-ITX builds. It combines an aluminum frame with tempered glass side and front panels to provide a balance of structural rigidity and visible component display. The case supports multiple fan mounts and radiator placements to enable effective airflow and liquid cooling configurations, while its spacious interior accommodates full-size graphics cards and standard tower CPU coolers. The matte black finish and clean lines provide a low-profile, modern appearance that fits a variety of setups.

Advantages

The BO400 features a durable aluminum construction and tempered glass panels that deliver both strength and component visibility without excessive weight. Multiple mounting points for fans and radiators ensure flexible cooling options for air and liquid builds. Cable management channels and a roomy interior simplify hardware installation and help maintain tidy airflow paths. The design supports common motherboard sizes and long graphics cards, making the case adaptable to gaming, workstation, and general-purpose systems.

Suitable for

• Gaming PC builds with full-size graphics cards
• Custom liquid cooling loops or multi-fan air setups
• Home or office desktop systems requiring a compact but expandable case
• Enthusiast and hobbyist system builders who want visible components

Key specifications

• Form factor: Midi Tower compatible with ATX, Micro-ATX, Mini-ITX motherboards
• Materials: aluminum frame with tempered glass side and front panels
• Cooling support: multiple fan mounts and radiator compatibility (front/top/rear)
• Drive bays: accommodates standard 2.5" and 3.5" drives (internal mounting options)
• Graphics card clearance: supports full-length GPUs (spacious interior)
• CPU cooler height: supports standard tower coolers (case internal height permitting)
• Front I/O: accessible front panel ports and buttons (easy reach for peripherals)

How to use

Install the motherboard onto the included standoffs, route power and data cables through the provided openings, and mount storage drives in the internal bays. Fit the power supply in its designated lower or rear compartment and secure the graphics card into the PCIe slot. Place fans or radiators in the recommended mounting locations to create positive or balanced airflow; ensure that front and top panels are reattached after installing cooling hardware. Close the tempered glass panels carefully and secure them according to the fastener design to protect internal components and maintain the case's aesthetic.

Recommendations

For optimal cooling, configure intake fans at the front and exhaust fans at the top and rear to establish a clear airflow path. When installing liquid cooling radiators, verify clearance for tubing and radiator thickness relative to the tempered glass panels. Use the case's cable management channels to route cables behind the motherboard tray to reduce airflow obstruction and improve thermal performance.