Form & Function Steamlined

MasterBox NR400

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

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 3 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.

*An extra 3.5" drive can be mounted only on the ODD version (pictured).



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.

Fan Support

Front: 120mm x3 / 140mm x2
Top: 120mm x2 / 140mm x2
Rear: 120mm x1

*non ODD version

Radiator Support

Front: 120/140/240/280mm
Top: 120/240mm
Rear: 120mm

*non ODD version

Product Name MasterBox NR400
Product Number MCB-NR400-KG5N-S00 (NR400 with ODD)
MCB-NR400-KGNN-S00 (NR400 without ODD)
Exterior Color Black
Materials - Body Steel, Plastic
Materials - Windowed Side Panel Tempered Glass
Dimensions 411 (L) x 210 (W) x 411 (H) mm
Motherboard Support Mini-ITX, Micro-ATX
Expansion Slots 4
5.25" Drive Bays 1 (NR400 with ODD)
N/A (NR400 without ODD)
3.5" HDD Drive Bays 4 (NR400 with ODD)
3 (NR400 without ODD)
2.5" SSD Drive Bays 4
I/O Panel - USB Ports USB 3.0 x 2
I/O Panel - Audio In / Out 1x 3.5mm Headset Jack (Audio+Mic)
Pre-installed Fan(s) - Front 120mm x 1
Pre-installed Fan(s) - Rear 120mm x 1
Fan Support - Front 120mm x 2 / 140mm x 2 (NR400 with ODD)
120mm x 3 / 140mm x 2 (NR400 without ODD)
Fan Support - Top 120mm x 1 / 140mm x 1 (NR400 with ODD)
120mm x 2 / 140mm x 2 (NR400 without ODD)
Fan Support - Rear 120mm x 1
Radiator Support - Front 120 / 140 / 240 / (280mm may interfere with HDD mounted below ODD) (NR400 with ODD)
120 / 140 / 240 / 280mm (NR400 without ODD)
Radiator Support - Top 120mm (NR400 with ODD)
120 / 240mm (NR400 without ODD)
Radiator Support - Rear 120mm
Clearance - CPU Cooler 166mm
Clearance - Power Supply 325mm max (w/o front radiator & HDD cage)
140mm (HDD cage in backmost position)
Clearance - Graphics Card 346mm
Cable Routing - Behind MB Tray 22mm
Dust Filters Top, Bottom
Power Supply Support Bottom Mount, ATX PS2
EAN Code 4719512080269 (NR400 with ODD)
4719512080276 (NR400 without ODD)
UPC Code 884102052750 (NR400 with ODD)
884102052767 (NR400 without ODD)
Awards & Reviews