Jonsbo has officially introduced the BO400 CG, a Secondary model of its BO400 PC case launched at the end of 2024. The BO400 series is recognized for its aluminum construction, combining profile aluminum columns with die-cast alloy parts to create a solid yet minimal frame. With the BO400 CG, Jonsbo has updated the design to enhance visibility and aesthetics while keeping core specifications consistent.
The most notable change in the BO400 CG is the front-panel redesign. Jonsbo has removed the left front pillar and extended the tempered glass from the front to the side with a curved layout. This creates a two-piece panoramic glass enclosure, offering a clear and wide view of the system’s interior. The design resembles a “panoramic sea view room,” giving users an unobstructed display of their hardware setup.

Despite the structural adjustment, the BO400 CG maintains the same hardware support as the original BO400. The case accommodates both standard and rear-inserted ATX motherboards, CPU coolers up to 173 mm in height, and graphics cards up to 435 mm in length. Power supplies up to 200 mm can be installed, providing flexibility for different system configurations.
Cooling options are also unchanged. The BO400 CG supports dual 360 mm radiators, giving builders the ability to set up advanced liquid cooling systems. This makes it suitable for high-performance builds where both thermal management and visual presentation are priorities.

Jonsbo’s approach with the BO400 CG highlights the growing demand for cases that balance function with aesthetics. While the original BO400 focused on a clean and practical design, the new CG model caters to users who want their PC builds to stand out with a panoramic glass display.
The company has not yet announced official pricing or availability details, but the BO400 CG is expected to launch in select markets soon. With its updated design and wide hardware support, the new model strengthens Jonsbo’s presence in the mid-to-high-end PC case segment.
Feature | Specification |
---|---|
Case Type | Mid-tower PC Case |
Material | Aluminum frame with die-cast alloy parts |
Glass Design | Curved dual-piece panoramic tempered glass |
Motherboard Support | Standard ATX, Rear-inserted ATX |
CPU Cooler Height | Up to 173 mm |
GPU Length | Up to 435 mm |
PSU Length | Up to 200 mm |
Radiator Support | Dual 360 mm radiators |
Other Features | Integrated GPU bracket, minimal clean style |