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The Regnum 400 Air is the home your components deserve — a proper mansion. It’s spacious, but without overwhelming your room (472×442×220 mm) and can easily house everything you need for work and more.

The interior of the case is airy and can be extremely windy thanks to the mesh front panel and the possibility of installing up to 8 fans — 4 black Stratus 120 PWM fans are already included in the package. The Regnum 400 Air can also fit a large radiator (240/280 mm on the top, 360 mm on the front) for the truly arctic environment for your treasures components.

The Regnum’s vast indoors allows you to install up to 4 disks — either 2× 2.5” and 2× 3.5”, or 4× 2.5”. It also accommodates even E-ATX motherboards, a 275 mm long PSU, and a GPU up to 370 mm. With enough room left to swing a cat!

Wind is howling
The most famous white-haired monster hunter was right, the wind is howling. The Regnum 400 Air is not only roomy but also sports a mesh front panel, guaranteeing uninterrupted airflow and low temperatures.

Have you met Stratus?
The Regnum 400 Air is a treasure chest, housing your precious rig. It even comes pre-equipped with jewels — you get 4 black Stratus 120 PWM fans, which we developed in collaboration with Synergy Cooling.

Showtime
If you take pride in your work and like to take an occasional peek inside your PC, the Regnum 400 Air has got you covered. Its sturdy tempered-glass window elegantly displays your shiny treasures components.

Enormous interior
The Regnum 400 Air takes no prisoners — but it could hold a few. It offers plenty of space thanks to its sizable interior, without overwhelming your entire room.

Design
Form factor: Tower
Type: PC
Product colour: Black
Supported motherboard form factors: ATX, micro ATX, Mini-ITX
Number of 3.5" bays: 2
Number of 2.5" bays: 2
Number of expansion slots: 7
Side window: Yes
Tempered glass panel(s): Yes
Anti-dust filter: Yes
Reset button: Yes
On/off button: Yes
Maximum CPU cooler height: 16.2 cm
Maximum graphics card length: 37 cm
Maximum PSU length: 29.6 cm
Power supply
Power supply included: No
Ports & interfaces
Audio input: Yes
USB 2.0 ports quantity: 2
Cooling
Front fans installed: 3x 120 mm
Rear fans installed: 1x 120 mm
Front radiator sizes supported: 120,240,280,360 mm
Rear radiator sizes supported: 120 mm
Top radiator sizes supported: 120,240,280 mm
Storage
Supported HDD sizes: 2.5,3.5"
Weight & dimensions
Width: 472 mm
Depth: 220 mm
Height: 442 mm