PC case Jonsbo U4 MINI WHITE Mini Tower White

The Jonsbo U4 MINI WHITE Mini Tower is a compact PC case designed for small-form-factor builds that require efficient cooling and tidy cable routing. Finished in white with a tempered glass side window, the chassis supports Mini-ATX and ITX motherboards, accepts ATX power supplies and provides space for one 3.5" drive and one 2.5" drive. With external dimensions of 222mm (W) x 440mm (D) x 385mm (H) and room for up to three 120mm fans, the case aims to balance a small footprint with practical component compatibility.

Advantages

The case combines a steel frame with a tempered glass side panel for a durable yet visually accessible interior. Support for multiple 120mm fans and an ATX power supply enables flexible cooling and power options despite the compact Mini Tower form factor. A single front USB 3.2 Gen 1 Type-A port provides convenient high-speed connectivity for external devices. The white finish and side window make the chassis suitable for clean, minimalist builds where internal components are visible.

Suitable for

• Compact gaming or multimedia PCs based on Mini-ATX or ITX motherboards
• Home or office systems where a small footprint is required
• Builds that need a mix of HDD and SSD storage (3.5" and 2.5")
• Systems prioritizing airflow with up to three 120mm fans

Key specifications

• Form factor: Mini Tower compatible with Mini-ATX and ITX motherboards
• Material: Steel chassis with tempered glass side panel
• Drive bays: 1 x 3.5" and 1 x 2.5"
• Cooling support: Up to three 120mm fans
• Front I/O: 1 x USB 3.2 Gen 1 (Type-A)
• Power supply: Supports standard ATX power supplies
• Colour: White
• External dimensions: 222mm (W) x 440mm (D) x 385mm (H)

How to use

Install a compatible Mini-ATX or ITX motherboard on the motherboard tray and secure it with the supplied standoffs and screws. Mount the ATX power supply in the designated compartment and connect power cables to the motherboard, drives and fans. Fit storage drives into the 3.5" and 2.5" bays using the appropriate screws or trays, and install up to three 120mm fans in the supported positions to establish airflow. Connect the front-panel USB port and power/reset switches to the motherboard using the provided cables, then route cables neatly to maintain unobstructed airflow and ease hardware access.

Recommendations

For optimal thermal performance, configure at least one intake and one exhaust 120mm fan and keep cable routing tidy to reduce airflow obstruction. When using high-power components, verify clearance for CPU coolers and graphics cards within the Mini Tower dimensions before final assembly.