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CoolerMaster MasterBox NR400 Micro-ATX Tower Case with Front Mesh Ventilation

SKU: CMCBNR4KG5NS MFR: MCB-NR400-KG5N-S00
$69.99
$74.99
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Key Features

  • Optimize airflow with the Cooler Master case's front mesh, keeping components cool.
  • This Micro-ATX tower case supports robust cable management for a tidy build.
  • Showcase your build through the tempered glass side panel of this stylish PC case.
  • Install multiple drives; this computer case supports both SSD and HDD configurations.
  • Keep dust at bay with integrated dust filters, ensuring system longevity and cleanliness.
  • Compact mini-tower design fits Micro-ATX/Mini-ITX boards, ideal for smaller gaming setups.
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Review Summary

CoolerMaster MasterBox NR400 Specifications

  • Color

    Black

  • Material

    Body: Steel, Plastic
    Side Panel: Tempered Glass

  • Series

    MasterBox Series

  • Size

    Mini Tower

  • Motherboard Support

    Micro ATX, Mini ITX

  • Expansion Slots

    4

  • Drive Bays

    5.25": 1
    3.5": 4
    2.5": 4

  • I/O Panel

    2x USB 3.0, 1x 3.5mm Headset Jack (Audio+Mic)

  • Pre-Installed Fans

    Front: 1x 120mm
    Rear: 1x 120mm

  • Fan Support

    Front: 2x 140mm, 2x 120mm
    Top: 1x 140mm, 1x 120mm
    Rear: 1x 120mm

  • Radiator Support

    Front: 120mm, 140mm, 240mm, 280mm (may interfere with HDD mounted below ODD)
    Top: 120mm
    Rear: 120mm

  • Clearance

    CPU Cooler: 6.54" (166mm)
    PSU: 12.8" (325mm) (w/o front radiator & HDD cage), 5.5" (140mm) (HDD cage in backmost position)
    GFX: 13.6" (346mm)

  • Cable Routing

    Behind Motherboard Tray: 0.87" (22mm)

  • Dust Filters

    Top, Bottom

  • Power Supply Support

    Bottom mount, ATX PS2

  • Dimensions (L x W x H)

    16.18 x 8.62 x 16.18" (411 x 219 x 411mm)

  • UPC Code

    884102052750

About CoolerMaster MasterBox NR400

Streamlined, By Definition
Simplicity in aesthetics rarely reflect complexity in design. Cooler Master's signature Fine Mesh spans the entire front panel for open airflow, makes up the structure of the case, and adds rigidity to its overall construction. Meticulously engineered for unhindered airflow, the MasterBox NR400 applies bold performance to a pure-and-simple design.

Minimalistic Design
The MasterBox NR400 is a pure and simple design that is focused on airflow performance. A single-layer, fine mesh makes up the entire front panel, achieving efficient airflow while also acting as a dust filter.

Seamless Tempered Glass
The tempered glass side panel sits completely flush against the chassis, mounted securely and discreetly by a system of tabs and thumbscrews.

Ample Storage Support
A total of 4 x 2.5" and 4 x 3.5" drives can be mounted using a tool-less system. Storage can be mounted on the PSU shroud, behind the motherboard tray, and within the versatile HDD cage.

Versatile HDD Cage
The HDD cage is (re)movable. The cage can be shifted forward to make room for a longer PSU, backwards for additional radiator space, or completely removed if HDD storage is not needed.

Headset Jack
The single 4 pole headset jack features both Audio and Microphone capabilities simultaneously so that separate jacks are not needed.

CoolerMaster MasterBox NR400 Features

  • Minimalistic Design
  • Seamless Tempered Glass
  • Ample Storage Support
  • Versatile HDD Cage
  • Headset Jack
  • Fan Support
  • Radiator Support
  • Component Clearances

Key Features

  • Optimize airflow with the Cooler Master case's front mesh, keeping components cool.
  • This Micro-ATX tower case supports robust cable management for a tidy build.
  • Showcase your build through the tempered glass side panel of this stylish PC case.
  • Install multiple drives; this computer case supports both SSD and HDD configurations.
  • Keep dust at bay with integrated dust filters, ensuring system longevity and cleanliness.
  • Compact mini-tower design fits Micro-ATX/Mini-ITX boards, ideal for smaller gaming setups.

What's in the box:

  • Cooler Master MasterBox NR400 Micro-ATX Tower Case
  • Tool Kit
  • Cooler Master 2 Year Limited Warranty