Cooler Master

Cooler Master MasterBox MCB-NR400-KG5N-S00 Computer Case - M (MCBNR400KG5NS00)

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SKU:
18047497
MPN:
226970
Availability:
Out of stock
Stock Update:
10/22/2025 12:27:04 PM PST
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Out of stock

Stock Update:
10/22/2025 12:27:04 PM PST

Description

This item is brand-new, factory sealed.

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.
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.
Product Name
MasterBox NR400Exterior Color
BlackMaterials - Body
Steel, PlasticMaterials - Windowed Side Panel
Tempered GlassMotherboard Support
Mini-ITX, Micro-ATXExpansion Slots
45.25" Drive Bays
1 (NR400 with ODD)3.5" HDD Drive Bays
4 (NR400 with ODD)2.5" SSD Drive Bays
4I/O Panel - USB Ports
USB 3.0 x 2I/O Panel - Audio In / Out
1x 3.5mm Headset Jack (Audio+Mic)Pre-installed Fan(s) - Front
120mm x 1Pre-installed Fan(s) - Rear
120mm x 1Fan Support - Front
120mm x 2 / 140mm x 2 (NR400 with ODD)Fan Support - Top
120mm x 1 / 140mm x 1 (NR400 with ODD)Fan Support - Rear
120mm x 1Radiator Support - Front
120 / 140 / 240 / (280mm may interfere with HDD mounted below ODD) (NR400 with ODD)Radiator Support - Top
120mm (NR400 with ODD)Radiator Support - Rear
120mmClearance - CPU Cooler
166mm

Features

Country of Origin:   
China

 

Specs

Power Description
Power Supply InstalledNo
Number of Power Supplies Supported1
Number of Power Supplies Installed0
Physical Characteristics
Product Material
  • Steel
  • Plastic
  • Mesh
  • Tempered Glass
Form FactorMini-tower
Product ColorBlack
Height16.2"
Color FamilyBlack
Width8.3"
Depth16.2"
Warranty
Limited Warranty2 Year
I/O Expansions
Total Number of Expansion Slots4
Interfaces/Ports
Total Number of Audio Out Ports1
Front Audio InYes
Front Audio OutYes
Front USBYes
Total Number of USB Ports2
Total Number of Audio In Ports1
Bays
Number of External 5.25" Bays1
Number of Internal 2.5" Bays4
Number of Total Expansion Bays9
Number of Internal 3.5" Bays4
General Information
Brand NameCooler Master
Manufacturer Website Addresshttp://www.coolermaster-usa.com
Marketing InformationMASTERBOX NR400 WITH ODD
FORM & FUNCTION STREAMLINED
Minimalistic Design
Seamless Tempered Glass
Ample Storage Support
Versatile HDD Cage
Headset Jack
Fan Support
Radiator Support
Component Clearances
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.
Product TypeComputer Case
Product NameMasterBox MCB-NR400-KG5N-S00 Computer Case
ManufacturerCooler Master Co., Ltd
Manufacturer Part NumberMCB-NR400-KG5N-S00
Product ModelMCB-NR400-KG5N-S00
Product SeriesNR400
Product LineMasterBox
Technical Information
Motherboard Supported
  • Micro ATX
  • Mini ITX
Installed Fan Size4.72"
Number of Fans Supported6
Number of Fans Installed2

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Warranty Information

All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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Cooler Master MasterBox MCB-NR400-KG5N-S00 Computer Case - M (MCBNR400KG5NS00)