JONSBO has announced the X400 PRO White, a new mid-tower PC case designed for enthusiasts. The manufacturer revealed the product on May 18, 2026. This release adds a white colorway to the company's existing lineup of chassis options.
New mid-tower chassis features robust aluminum frame and dual-chamber cooling design
The chassis features a robust aluminum frame construction. It includes tempered glass panels on the front and left side for visibility. The internal layout utilizes a dual-chamber design to separate heat-generating components. A dedicated cable cover sits behind the motherboard tray to manage wiring.
The case supports ATX, MicroATX, and Mini-ITX motherboards. It measures 310.9mm in width, 460.7mm in depth, and 476.8mm in height. The unit weighs 11.3kg. It accommodates graphics cards up to 427mm long. Users can install CPU coolers up to 176mm in height. The power supply bay supports units up to 180mm deep.
Cooling flexibility is a key feature of the X400 PRO White. The top panel supports either three 120mm fans or two 140mm fans. It also accepts 280mm or 360mm radiators. The side panel allows for three 120mm fans or a single 360mm radiator. Additional mounting points exist for two 120mm fans on the rear, three on the bottom, and two on the motherboard tray. The case provides seven expansion slots and includes drive bays for one 2.5-inch and two 3.5-inch drives.
JONSBO has not disclosed pricing or availability details for the X400 PRO White. The company has not confirmed a specific launch window for the product. Buyers will need to wait for further announcements regarding retail distribution.
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