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🏆 Build to Impress: Where Function Meets Style!
The Cooler Master MasterBox NR400 is a compact mATX mini tower case designed for optimal airflow and cooling performance. It features a tempered glass side panel for showcasing your build, supports multiple fan configurations, and offers smart cable management solutions, making it an ideal choice for both aesthetics and functionality.














| ASIN | B07QP88F8B |
| Antenna Location | Indoor |
| Best Sellers Rank | 253,190 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 2,534 in Computer Cases |
| Box Contents | Computer Case |
| Brand | Cooler Master |
| Brand Name | Cooler Master |
| Case Type | Mini-Tower |
| Case type | Mini-Tower |
| Colour | Black |
| Compatible Devices | Micro-ATX Motherboard |
| Cooling Method | Air |
| Customer Reviews | 4.5 out of 5 stars 191 Reviews |
| Enclosure Material | Tempered Glass |
| Fan Size | 120 Millimetres |
| Global Trade Identification Number | 04719512080276 |
| Hard Disk Form Factor | 2.5 Inches |
| Internal Bays Quantity | 2 |
| Item Dimensions D x W x H | 48D x 48W x 29H centimetres |
| Item Type Name | Micro ATX mini tower case, tempered side glass, 2 x 120 mm pre-installed fans, flexible airflow and wiring management, without optical disc burner |
| Item Weight | 10.43 Grams |
| Light Color | Black |
| Manufacturer | Cooler Master Europe B.V. |
| Manufacturer Part Number | MCB-NR400-KGNN-S00 |
| Material | Tempered Glass |
| Model Name | NR400 |
| Model Number | MCB-NR400-KGNN-S00 |
| Motherboard compatibility | Micro ATX |
| Number of Fans | 6 |
| Other Special Features of the Product | High air flow |
| Power Supply Mounting Type | Rear Mount |
| Product Warranty | 1 Year |
| Recommended uses for product | Indoor |
| Supported Motherboard | Micro ATX |
| Total Expansion Slots Quantity | 4 |
| Total USB 2.0 Ports | 2 |
| Total USB 3.0 Ports | 2 |
| Total USB Ports | 2 |
| Unit Count | 1.0 count |
D**N
A joy to build a PC with!
Bought this case to reshell an ebay i5-8400 SFF PC i bought cheap that would shutdown on full load - this is a joy to work with with plenty of room and cable management holes/tie points! I have ditched the 2 included 120mm case fans and have opted for 3 x 140mm arctic F14s fans (2 front, 1 top) and an F12 120mm fan rear along with a a Corsair VS650 PSU and massive Cooler Master Hyper 212 EVO. I have had it running for 6 hours solid now doing H265 1080 encodes and due to the air flow and fans it the CPU doesn't go above 55 degrees and is virtual silent while on 100% - in fact is quieter than my QNAP NAS on idle - incredible! Nice touch is the case also include a molex to 3 fan cable so you can really max out the case fans, though i opted to buy separate motherboard chassis fan splitter cables so the fans throttle up and down as required. Case was delivered promptly with 4 days which is great since we are in C19 lockdown. Looking forward to upgrading to an i9 next month and don't foresee temps going any higher. Would make a great gaming case, or, as it has space for 3x 3.5s and 4 x 2.5s a good htpc box. I will probably consolodate my NAS drives into this at some point its that good.
M**S
Comfortable.
I've found this case very easy to work in, the cable tie points are very handy. I would recommend getting at leas a smi-modular power supply, as there is not a lot of room to stash cables. Working with RGB fans is a bit of a nightmare but the cable tie points save it here. Good value.
F**R
Love this case
Solid case for the price, looks stunning, Cable management is accounted for and overall wide range of compatibility. System Config: I5 9600k oc to 4.6ghz Evga GTX 1070ti Sc Black edition 16gb 3000mhz Corsair Vengance RGB MSI B360m Bazooka Motherboard 2x 140mm Corsair LL series fans at front 1x 120mm Corsair LL series fan at rear Coolermaster masterlite 240mm radiator for CPU watercooling.
J**.
Great case for the money
Looks great, great cable management, great price, easy to install everything onto it, 100% recommend
A**S
Computer cage
Computer cage that lights up
S**Y
Coolermaster nr400
Easy to build in with enough room for clean and tidy cable managment
S**R
Petit boitier
Assemblage difficile du fait de l'exiguïté du boitier. Bien-sûr le lecteur de CD n'est pas fourni, juste le boîtier en autorise le montage.
C**E
Excelente
É exatamente o que eu queria
M**S
buena caja basica
pese a su ajustado precio...me ha gustado la caja. los materiales no se sienten mal del todo (basicos), la modularidad es buena y los ajustes tambien...una realizado el montaje queda una caja compacta, bien ventilada muy resultona
Z**Y
Sehr gutes Micro-ATX Gehäuse
Wer einen kleinen Formfaktor sucht und dabei nicht tief in die Brieftasche greifen möchte, ist hier genau richtig. Das Gehäuse sieht sehr schlicht und elegant aus. Der Aufbau war auch wirklich sehr einfach, da das Gehäuse einem genug Stauraum für die Kabel übrig lässt. Dazu kommt noch das Mesh-Front, was für einen spitzen Airflow sorgt. Diese sind - zumindest meiner Meinung nach - ein Muss für jedes Build.
K**Y
High Airflow in a sexy little box.
The case itself looks fantastic, and the mesh front is a nice change compared to the rest of the market having choked metal front panels. The hardest part about building in this was due to my power supply being a little large. If you are considering this case and want to use the hard drive cage inside of the PSU shroud, then I would recommend getting a shorter PSU. For the price you are getting a lot of good features in this case: - Tempered glass - Rubber grommets - 2 fans - Easy disassembly of the case - Mesh front for good airflow - Multiple options for fan mounting - Options for watercooling in the top and the front Overall I am very happy with this case, premium M-ATX cases are hard to come across, and this one certainly fits the premium aesthetic without the premium price.
Trustpilot
1 day ago
5 days ago