{{ totalProductsCount }}

In cart {{totalProductsCount}} item(s)

Total:
{{sum | formatAmount}}

Your cart is empty

header-product PC Case Cooler Master MasterBox NR400 Mini Tower Black
54.99 €

PC Case Cooler Master MasterBox NR400 Mini Tower Black

PC Case Cooler Master MasterBox NR400 Photo 1
PC Case Cooler Master MasterBox NR400 Photo 2
PC Case Cooler Master MasterBox NR400 Photo 3
PC Case Cooler Master MasterBox NR400 Photo 4
PC Case Cooler Master MasterBox NR400 Photo 5
PC Case Cooler Master MasterBox NR400 Photo 6
PC Case Cooler Master MasterBox NR400 Photo 7
PC Case Cooler Master MasterBox NR400 Photo 8
PC Case Cooler Master MasterBox NR400 Photo 9
PC Case Cooler Master MasterBox NR400 Photo 1
PC Case Cooler Master MasterBox NR400 Photo 2
PC Case Cooler Master MasterBox NR400 Photo 3
PC Case Cooler Master MasterBox NR400 Photo 4
PC Case Cooler Master MasterBox NR400 Photo 5
PC Case Cooler Master MasterBox NR400 Photo 6
PC Case Cooler Master MasterBox NR400 Photo 7
PC Case Cooler Master MasterBox NR400 Photo 8
PC Case Cooler Master MasterBox NR400 Photo 9
Keep track of price changes You keep track of price changes
Watch the price drop

Leave your address - as soon as the price of the product goes down, you'll know about it right away

You keep track of price changes

PC Case Cooler Master MasterBox NR400 Mini Tower Black

{{email}}
You keep track of price changes

PC Case Cooler Master MasterBox NR400 Mini Tower Black

{{email}}
{{selectedOffer && selectedOffer.price | formatAmount}}

Short description

The Cooler Master MasterBox NR400 is a Mini Tower PC case designed for optimal airflow and cooling. It features a sleek black design, bottom-mounted power supply, and supports ATX and PS2 power supply form factors. The case comes with one pre-installed 120mm front fan and supports additional 120mm or 140mm fans for enhanced cooling. It accommodates both 2.5" and 3.5" HDD sizes, making it versatile for various storage needs. Dimensions: 210mm (W) x 411mm (D) x 411mm (H).
Available at price 54.99 €: 3 pcs.
Total available for order: 33 pcs.
Warranty: 2 Years
SKU: 1990054
free shipment

Cheapest delivery:

Venipak Pickup LV, Venipak Locker LV

Pick-up points

Venipak Pickup LV

Venipak Locker LV

Cost

1.89 €

Deliver

{{selectedOffer.parcelStationDeliveryString}}

Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
13.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
16.07.2026 {{selectedOffer.courierDeliveryString}}
From 6.27 € (Weight: 6.83 kg)
Parcel couriers
Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
16.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
payment
Payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
Together cheaper
{{product.price | formatAmount}}
{{product.title}}
{{productBundle.reference.specialPrice | formatAmount}}
{{productBundle.title}}
{{productBundlePreviousPrice | formatAmount}}
{{productBundleSpecialPrice | formatAmount}}

You saving {{productBundleYouSave | formatAmount}}

Product information

Description

The Cooler Master MasterBox NR400 without ODD is a Mini Tower PC case designed for focused airflow and practical storage. Its single-layer fine mesh front panel maximizes air intake while serving as a dust filter. The tempered glass side panel sits flush with the chassis and is secured with tabs and thumbscrews. The case supports bottom-mounted power supplies, accommodates Mini-ITX and Micro ATX motherboards, and ships with one pre-installed 120 mm front fan. Dimensions: 210 mm (W) x 411 mm (D) x 411 mm (H).

Advantages

The NR400 prioritizes cooling with a full mesh front that improves airflow and reduces dust buildup. Its seamless tempered glass side panel provides a clean interior view while maintaining a secure fit. Tool-less drive mounting supports multiple 2.5" and 3.5" drives in various locations, and the single 4-pole headset jack combines audio and microphone functions for simpler connectivity. Compact Mini Tower proportions and support for common radiator sizes allow flexible cooling and component choices.

Suitable for

  • Compact gaming or productivity builds using Mini-ITX or Micro ATX motherboards
  • Systems that require strong airflow and multiple storage drives
  • Users who want a tempered glass side panel with a minimal exterior

Key specifications

  • Form factor: Mini Tower
  • Supported motherboard sizes: Mini-ITX, Micro ATX
  • Drive bays: 4 x 2.5" and 3 x 3.5" (tool-less)
  • Pre-installed fans: 1 x 120 mm front fan
  • Fan support: Front 120 mm x3 or 140 mm x2; Top 120 mm x2 or 140 mm x2; Rear 120 mm x1
  • Radiator support: Front 120/140/240/280 mm; Top 120/240 mm; Rear 120 mm
  • Front panel: single-layer fine mesh (acts as dust filter)
  • Side panel: tempered glass, flush-mounted
  • Front I/O: 1 x 4-pole headset jack, 2 x USB 3.2 Gen 1 Type-A
  • Power supply: bottom-mounted, not included
  • Material: Steel and plastic
  • Colour: Black
  • Dimensions (W x D x H): 210 x 411 x 411 mm
  • Weight: 5.56 kg
  • MPN/EAN: MCB-NR400-KGNN-S00 / 4719512080276

How to use

Install the motherboard (Mini-ITX or Micro ATX) onto the tray and mount the power supply in the bottom compartment. Fit storage drives using the tool-less trays or mounts on the PSU shroud and inside the HDD cage. Route cables behind the motherboard tray for a tidy build and secure the tempered glass side panel with the provided thumbscrews and tabs. Add optional fans or radiators to the front, top, or rear according to supported sizes to improve cooling performance.

Usage recommendations

For best airflow, populate the front with intake fans (up to three 120 mm or two 140 mm) and use the rear/top positions for exhaust. Keep the front mesh clean to maintain optimal intake efficiency, and verify radiator clearance against your chosen CPU cooler and GPU length before final assembly.

Specifications

Type:
PC
Form factor:
Mini Tower
Number of 3.5" bays:
3
Number of 2.5" bays:
4
Number of 5.25" bays:
0
Side window:
Yes
Power supply included:
No
USB 2.0 ports quantity:
0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity:
2
Weight:
5.56 kg
Supported motherboard form factors:
Mini-ITX, Micro ATX
Material:
Steel, Plastic
Product colour:
Black
All features

Design

Type:
PC
Form factor:
Mini Tower
Supported motherboard form factors:
Mini-ITX, Micro ATX
Number of 3.5" bays:
3
Number of 2.5" bays:
4
Number of 5.25" bays:
0
Side window:
Yes
Material:
Steel, Plastic
Product colour:
Black
Anti-dust filter:
Yes
Suitable for:
Gaming
Maximum CPU cooler height:
166 mm
Maximum graphics card length:
346 mm
Number of expansion slots:
4
Maximum PSU length:
325 mm
Cable management:
Yes
Reset button:
Yes
On/off button:
Yes
Tempered glass panel(s):
Yes

Power supply

Power supply included:
No
Power supply location:
Bottom
Supported power supply form factors:
ATX, PS2

Ports & interfaces

USB 2.0 ports quantity:
0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity:
2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity:
0
Audio input:
Yes
Audio output:
Yes
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity:
0

Cooling

Front fans installed:
1x 120 mm
Number of front fans supported (max):
3
Front fans diameters supported:
140, 120
Rear fans diameters supported:
120
Top fans diameters supported:
140, 120
Number of rear fans supported (max):
1
Number of top fans supported (max):
2
Rear fans installed:
1x 120 mm
Liquid cooling capability:
Yes
Rear radiator sizes supported:
120
Front radiator sizes supported:
280, 240, 140, 120
Top radiator sizes supported:
240, 120

Storage

Supported HDD sizes:
2.5, 3.5

Weight & dimensions

Weight:
5.56 kg
Height:
411 mm
Width:
210 mm
Depth:
411 mm

Packaging data

Package weight:
6590 g
Package depth:
480 mm
Package height:
480 mm
Package width:
278 mm

Logistics data

Harmonized System (HS) code:
84733080

Description

Machine translation. Load original

Similar products

{{product.title}} Show details Hide details

{{highlightedFeature.featureTitle}}:

{{getProductFeatureValueById(product, highlightedFeature.featureId)}}

{{product.price | formatAmount}}
Might be useful
{{product.manufacturerName}}
{{product.categoryName}}
{{product.title}}
{{product.specialPrice}}
{{product.price}}
Stock data
Warehouse Stock Delivery to the store Store Price
WH155 3 13.07.2026 Best delivery 54.99 € Best price
Available only for legal entities
Warehouse Stock Delivery to the store Store Price
WH345 30 13.07.2026 Best delivery 72.99 €
54.99 €
Stock: 3
Delivery Date: 13.07.2026 Best delivery
Warehouse: WH155
Available only for legal entities
72.99 €
Stock: 30
Delivery Date: 13.07.2026 Best delivery
Warehouse: WH345

Customer reviews

Customer questions

FAQ

How much does the PC Case Cooler Master MasterBox NR400 cost, and is it available for purchase?

The price is 54.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 33 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 13.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Cooler Master products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Cooler Master service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: type, form factor, number of 3.5" bays, number of 2.5" bays, number of 5.25" bays, side window, power supply included, usb 2.0 ports quantity, usb 3.2 gen 1 (3.1 gen 1) type-a ports quantity, weight, supported motherboard form factors, material, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for PC Case Cooler Master MasterBox NR400?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
shipping
Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
payment
Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
warranty
Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.