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Water-cooling installation simplified for both AIO and custom loop

The H400i showcases NZXT’s vision for modern PC building. This premium micro-ATX case features a unique CAM-powered Smart Device that digitally drives RGB lighting and fan performance. You can effortlessly control RGB lighting and fans, while Adaptive Noise Reduction optimizes your build’s acoustics through machine learning and ideal fan settings. Includes three integrated Aer F fans and two RGB LED to enhance the aesthetics of your build as seen through the H400i’s stunning tempered glass panel.

  • CAM Powered Smart Device to simplify installation and manage use of RGB lighting and fans
  • Premium, all-steel construction with the sleek H-series design; available in four color combinations
  • Tempered glass panel showcases custom RGB lighting
  • System installation and expansion made easy with all-new cable management system
  • Water-cooling installation simplified for both AIO and custom loop
  • Adaptive Noise Reduction optimizes cooling and noise balance for best gaming comfort


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  • Filters: Front, Top, and PSU Intake
  • I/O Ports: 2 x USB 3.1 Gen 1, 1 x Audio/Mic

Fan Specs

  • Aer F120 (Case Version)
  • Speed: 1200 200 RPM
  • Airflow: 50.42
  • CFM Noise: 28 dBA
  • Bearing: Rifle Bearing


  • W: 210mm H: 393mm D: 421mm (without feet)
  • W: 210mm H: 417mm D: 421mm (with feet)
  • Material(s): SECC Steel and Tempered Glass
  • Weight: 7.6 kg

Radiator Support

  • Front: 2 x 140 or 2 x 120mm with Push/Pull
  • Rear: 1 x 120

Smart Device: 3 x Fan channels with Max 10W per channel output* 1 x RGB LED port support up to 4 x HUE LED strips or 5 x Aer RGB fans, Built-in noise detection module
*Note: If a splitter is used, fan control is regulated depending on the fan connected to the 4-pin port. Do not use low-noise adapters.

  • Motherboard Support: mini-ITX and microATX
  • Warranty: 2 Years


  • Cable Management: 18-22mm
  • GPU Clearance: Up to 411mm
  • CPU Cooler: Up to 164mm
  • Front Radiator: 60mm

Fan Support

  • Front: 2 x 120/2 x 140mm (2 Aer F120 Case Version included)
  • Top: 2 x 120/2 x 140mm
  • Rear: 1 x 120mm (1 Aer F120 Case Version included)

Drive Bays

  • 2.5”: 3 1
  • 3.5”: 1

Expansion Slots: 4

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