PC case Jonsbo N3 Mini Tower Black

The Jonsbo N3 Mini Tower Black is a compact PC case designed for small-form-factor desktop builds. Measuring 233 mm wide, 262 mm deep and 298 mm high, it accepts ITX motherboards and is built from steel and aluminium for a balance of durability and light weight. The chassis supports SFX power supplies and provides drive accommodation for 3.5" hard drives and 2.5" solid-state drives. A single front USB 3.2 Gen 1 Type‑A port enables fast external device connections while the overall design focuses on saving desk space without sacrificing essential expandability.

Advantages

The case combines a compact footprint with metal construction, offering a rigid enclosure that weighs 3.9 kg for easy handling and stable installation. Support for SFX power supplies simplifies compatibility with high-performance small-form-factor PSUs. Multiple 3.5" drive bays alongside a 2.5" bay provide flexibility for mixed HDD and SSD storage configurations. The integrated front USB 3.2 Gen 1 Type‑A port ensures high-speed data transfer for external drives and peripherals.

Suitable for

• Compact gaming or workstation builds based on ITX motherboards
• Home theater PCs and small desktop systems where desk space is limited
• Builders who need multiple 3.5" drive bays in a mini tower chassis

Key specifications

• Form factor: Mini Tower compatible with ITX motherboards
• Dimensions (W×D×H): 233 × 262 × 298 mm
• Material: Steel and aluminium
• Weight: 3.9 kg
• Drive bays: 3.5" bays and 2.5" bay support
• Power supply: Supports SFX power supplies (included)
• Front I/O: 1 × USB 3.2 Gen 1 (Type‑A)
• Colour: Black

How to use

Install an ITX motherboard onto the standoffs provided and secure it with the appropriate screws. Fit an SFX power supply into the designated compartment and connect power cables to the motherboard and installed drives. Mount 3.5" hard drives and 2.5" SSDs into the matching bays, ensuring proper airflow around storage devices. Connect front panel headers, including the USB 3.2 Gen 1 Type‑A port, to the motherboard according to the motherboard manual. After internal assembly, place the assembled system in a well-ventilated area and connect external peripherals and power.

Recommendations

For reliable thermal performance in this compact enclosure, choose low-profile cooling solutions and ensure unobstructed airflow. Verify SFX power supply dimensions before purchase to confirm fit. When populating multiple 3.5" drives, plan cable routing to maintain airflow and reduce internal temperatures.