JONSBO A4 Ver1.1 Black Aluminium Mini-ITX PC Case (J-CA-A4-BK)

Create a Compact Black ITX Build with Separate Component Chambers

JONSBO A4 Ver1.1 Black is a Mini-ITX enclosure with aluminium-magnesium alloy outer panels and tempered-glass sides. Its separated layout places the motherboard and graphics card in distinct areas, giving a deliberately compact custom desktop a clear structure. This listing is for the chassis, not the complete system shown in some demonstration images.

The manufacturer lists a 71mm CPU-cooler limit, 325mm graphics-card length and SFX/SFX-L PSU formats. Optional top and bottom 120mm fan positions need to be planned together with drives, cables and cooling. Confirm the exact graphics-card riser arrangement and compatibility before assembly; do not assume a modern PCIe generation or every accessory specification from the case name alone.

Best For: Mini-ITX desktops, Black aluminium builds, Compact custom systems, Separated GPU layouts, Careful cable planning, DIY component upgrades

DETAIL SPECIFICATION

TECHNICAL FEATURES

Plan the separated component layout

Motherboard and graphics card occupy different areas. Confirm the exact riser arrangement and GPU installation before buying the rest of the build.

Choose a low-profile CPU cooler

The 71mm air-cooler limit demands an actual installed-height check. Select cooling for the intended CPU workload rather than relying on the appearance of a demonstration build.

Treat mounts as shared space

Optional top and bottom fan locations interact with drives and other hardware. Check cables, fan thickness and service access as a complete installation.

Connect the front panel correctly

The exact A4 manual includes USB 3.1 Gen 2 alongside USB 3.0. The physical USB-C port still requires a compatible motherboard header and appropriate cable routing.

🔎 Technical Conclusion

Case Format:
Black Ver1.1 aluminium-panel Mini-ITX enclosure with separated motherboard/GPU layout; chassis only.

Airflow / Cooling:
Optional two 120mm top and two 120mm bottom fan positions; verify the complete cooling and drive arrangement.

Component Clearance:
CPU cooler up to 71mm and GPU length up to 325mm; check card thickness, riser and power plugs.

Connectivity / Layout:
USB-A 3.0, manual-verified USB-C/USB 3.1 Gen 2 and power button; two expansion slots.

Physical / Installation:
169 x 273 x 340mm (W x H x D), 5.6kg; SFX/SFX-L PSU format with exact unit/cable fit checks.

Overall Positioning:
A compact ITX chassis for deliberate hardware matching, with alloy panels and glass presentation rather than unrestricted tower clearances.

✅ Suitable For

• Mini-ITX users seeking a compact black enclosure
  Choose the exact board and hardware to suit the separated layout and limited installation space.
• Builders planning a discrete graphics card
  Confirm card length, thickness, riser compatibility and cable bends before assembly.
• Owners choosing compact cooling
  Match the 71mm air-cooler limit or verify a complete alternative cooling installation against the exact manual.
• DIY users comfortable with careful routing
  Plan drives, fans and PSU cables together so the enclosure can be closed and serviced correctly.

🛡️ Buy With Confidence — Ralik Aftersales Support

• Build-Fit Guidance
  Contact Ralik with the exact motherboard, GPU, PSU and cooler models for compatibility guidance.
• Aftersales Assistance
  Contact Ralik for product-related aftersales assistance.