PC case Jonsbo D31 STD White — Midi Tower, steel, tempered glass, Micro-ATX/ITX/DTX, 2×2.5 inch + 1×3.5 inch, GPU up to 400 mm, CPU cooler 168 mm

The Jonsbo D31 STD Midi Tower White is a compact ATX-compatible PC case designed for Micro ATX, ITX and DTX builds. Finished in white steel with a side window, the chassis balances a restrained aesthetic and practical internal layout. It supports an ATX power supply and provides mounting space for 2.5" and 3.5" drives while offering multiple fan positions for effective airflow. Dimensions are 205mm (W) x 440mm (D) x 347.5mm (H), making the case suitable for space-conscious setups that still require flexible cooling and storage options.

Advantages

The case combines a steel construction with a side window that allows component visibility without compromising structural rigidity. Support for front and rear 120mm fans plus top 140mm/120mm fan options provides configurable cooling to match different component layouts. Internal drive bays accommodate both 2.5" SSDs and a 3.5" HDD, and the chassis accepts standard ATX power supplies for broad compatibility with common PC components. Its compact footprint simplifies placement in smaller rooms or on crowded desks.

Suitable for (tasks / use cases)

• Home and office Micro ATX or ITX desktop builds
• Compact gaming rigs with discrete GPU
• Media centers or HTPC systems that need a small footprint
• Upgrades where front/rear/top fan configurations are desired

Key specifications

• Form factor: Midi Tower
• Supported motherboard sizes: Micro ATX, ITX, DTX
• Compatible power supply: ATX
• Drive bays: 1 × 3.5" bay, 2 × 2.5" bays
• Cooling support: front 120mm, rear 120mm, top 140mm/120mm
• Material: Steel
• Side panel: Windowed side panel for component visibility
• Exterior colour: White
• Dimensions (W × D × H): 205mm × 440mm × 347.5mm
• Weight: 6.5 kg

How to use

Install a compatible Micro ATX, ITX or DTX motherboard on the standoffs, fit an ATX power supply into the PSU bay and route cables through the available openings. Mount storage drives into the dedicated 2.5" or 3.5" bays and secure them according to the case mounting points. Install cooling fans in the front, rear and/or top positions according to your thermal requirements and connect them to motherboard fan headers or a fan controller. After installing the GPU and other expansion cards, verify clearances for cable management and airflow before closing the side panel.

Recommendations

For balanced cooling, use a front 120mm intake and a rear 120mm exhaust as a minimum. If installing a high-performance GPU or CPU cooler, add a top 120mm or 140mm fan to improve heat extraction. Choose 2.5" SSDs for faster system drives and reserve the single 3.5" bay for bulk storage. Ensure cable routing behind the motherboard tray is tidy to maintain unobstructed airflow through the side window area.