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The Jonsplus BO400CG is a high-quality showcase case for enthusiasts who want to stylishly display their hardware. Featuring a curved glass panel, modular design, and plenty of space for high-end components, it combines design, flexibility, and strong cooling performance.
The BO400CG clearly stands out from classic cases thanks to its curved glass panel. The gently curved glass surface creates a seamless panoramic look without harsh edges. This ensures your hardware is perfectly displayed from almost every angle.
The sturdy aluminium frame not only gives the case a premium appearance but also aids heat dissipation. Tool-free removable side panels and interchangeable covers make assembly and later modifications easier. Cable management solutions ensure a clean look.
With support for graphics cards up to 435 mm, CPU coolers up to 173 mm, and power supplies up to 200 mm, the BO400CG is suitable for powerful systems. Up to ten 120 mm fans or multiple large radiators enable effective air or water cooling—even under heavy load.
| Case Features | |
| I/O position | Side |
| Side panel | with window |
| Vertical GPU Mount | No |
| Adjustable Vertical GPU Bracket | No |
| Front door | No |
| Cable Management | Yes |
| Filters Included | Yes |
| Noise dampening | No |
| Mainboard slide / tray | No |
| Remote included | No |
| Transport System | No |
| Back Connect | |
| Back Connect | Yes |
| Back-Connect Compatibility | ASUS BTF, MSI Project Zero, Gigabyte Project Stealth |
| Radiator Support | |
| Radiator/AIO Support (Side) | 360mm Radiator |
| Max. Radiator Compatibility | 3x Triple (360 mm) |
| Radiator/AIO Support (Bottom) | 280mm Radiator, 360mm Radiator |
| Radiator/AIO Support (Top) | 280mm Radiator, 360mm Radiator |
| Colour | |
| Primary Colour | Gunmetal Grey |
| Power Supply | |
| PSU included | No |
| PSU Format | ATX |
| Power Supply Position | rear bottom |
| Mounting | |
| Case VESA Mountable | No |
| Internal Monitor Mount | No |
| Motherboard Support | |
| Compatible Motherboard Formats | ATX, Micro-ATX, Mini-ITX |
| Max. Motherboard Format | ATX |
| Features | |
| Housing Feedthrough | No |
| Case | |
| Case Type | Mid Tower |
| Compliance | |
| Compliance Documents | Jonsplus Case Compliance and Safety |
| Fan Support | |
| Case Fan Support (Top) | 120mm Fan (3x), 140mm Fan (2x) |
| Case Fan Support (Rear) | 120mm Fan (1x) |
| Case Fan Support (Side) | 120mm Fan (3x) |
| Case Fan Support (Bottom) | 120mm Fan (3x), 140mm Fan (2x) |
| Max. Number of Fans | 10 |
| 120 mm fans | 10 |
| 140 mm fans | 4 |
| Display | |
| Display Included | No |
| Dimensions | |
| Length / Depth | 474 mm |
| Width | 311 mm |
| Height | 489 mm |
| Weight | 12.9 kg |
| Materials | |
| Materials | Steel, Tempered Glass |
| Drive Bays | |
| Max. 2.5 Inch Drives | 2 |
| Max. 3.5 Inch Drives | 4 |
| Max. 5.25 Inch Drives | 0 |
| Hot swap drive bays | No |
| Lighting | |
| Lighting / RGB | No |
| Fan Header | |
| Fan Controller / Fan Hub | No |
| Additional Contents | |
| Fans Included | No |
| Included fans | None |
| Internal Dimensions | |
| Max. CPU Cooler Height | 173 mm |
| Max. GPU Length | 435 mm |
| Max. PSU Length / Depth | 200 mm |
| Expansion Slots | |
| Expansion slots / PCI slots | 8 |
| External Ports | |
| Front I/O – USB Type C Ports Total | 1 |
| Front I/O – USB Type A Ports Total | 2 |
| USB 3.2 (external) Type C | 1 |
| USB 3.0 (external) Type A | 2 |
| Audio outputs & inputs | 1x output / input comb. (3.5 mm jack, 4-pin, TRRS) |
| Card reader | No |
| Cable Specifications | |
| Riser Cable Included | No |