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The Cooler Master N400 Mid Tower Case is engineered for professionals who demand superior airflow and versatile cooling options, featuring a fully meshed front panel, support for 240mm radiators, and up to eight fans. It offers tool-less SSD installation, three dust filters for easy maintenance, and dual USB 3.0 ports for seamless connectivity, all housed in a robust metal frame designed for effortless builds and long-term reliability.





| ASIN | B00DKXXBU0 |
| Antenna Location | Business |
| Best Sellers Rank | #87 in Computer Cases |
| Brand | Cooler Master |
| Built-In Media | case |
| Case Type | Full Tower |
| Color | N400 |
| Compatible Devices | NVIDIA GTX 690, AMD HD 7990 |
| Cooling Method | Air |
| Customer Reviews | 4.1 4.1 out of 5 stars (777) |
| Enclosure Material | Metal |
| Fan Size | 120 Millimeters |
| Global Trade Identification Number | 00094553537311, 00884102023293 |
| Hard Disk Form Factor | 2.5 Inches |
| Internal Bays Quantity | 3 |
| Item Dimensions D x W x H | 19.7"D x 7.5"W x 16.7"H |
| Item Weight | 12.4 Pounds |
| Manufacturer | Cooler Master USA, Inc. |
| Model Name | NSE-400-KKN2 |
| Number of Fans | 3, 8 |
| Other Special Features of the Product | Built-In Fan |
| Power Supply Mounting Type | Rear Mount or Bottom Mount |
| Supported Motherboard | ATX |
| Total Expansion Slots Quantity | 7 |
| Total USB 3.0 Ports | 2 |
| Total Usb Ports | 2 |
| UPC | 172302889338 132017921501 172304224540 677291407810 809385175682 808111663608 731215288159 094553537311 151904886167 782386490674 884102023293 804066544528 809185326475 603467947378 |
| Unit Count | 1.0 Count |
| Warranty Description | 2 years |
I**C
7x3.5mm drive bays... PERFECT FOR SERVERS!
I bought this case for my home server. I was looking all over the internet for sub $80 cases with more than 6 drive bays. This is the one I pulled the trigger on. I could not be more happy. There is more than enough drive bays for my needs, the quality of the case is amazing, the value is fantastic, it is super easy to build in, and it comes with all the screws needed for a complete build. The drive bays were the main reason behind buying this case. There are other cases from other brands that feature similar amounts of drive bays, but at almost double the cost. The case quality is amazing, it felt really sturdy with all my hardware inside of it, there was not metal bending or anything. At roughly $75 (when I bought it) it gives a great value compared to other cases. It was super easy to build my server in this case as well, it only took me about 30 minutes for everything. Thankfully this case came with all the proper installation hardware for components, I have had to deal with some cases before that actually did not have all the necessary screws included.
M**E
Very nice case to build with lots of storage
I don't tend to spend a lot on my components. I want solid, long life, but for bells and whistles I save that for the software. This lower-priced case seemed to fit the bill, so I figured I'd give it a whirl. One of the things I noticed again and again: no sharp edges. I have been doing this long enough that I remember when several serious cuts were always part of the deal when building or repairing a computer. This case has rounded all the edges, and it makes it feel like quality. Also, it improves the rigidity of the metal just a bit. The case is spacious, with lots of drive bays. I'm not sure how one would use the bottom bay, unless the drive was installed upside down (which would have its own retention issues), but I'm not using anywhere close to the available drive bays. Also, although I thought I had used up the tool-free mounting hardware, when I looked on the other side, I found some more, so I'm not even using all of the drive mounting clips. I've heard that some new computer cases have foundation panels that can be removed. While I can see that being handy, this isn't one of those cases. However, by focusing on getting the motherboard and power supply in first, it was easy to access everything I needed, and there's plenty of space to run cables behind the foundation for drives or front panel. I haven't tested out the audio, etc. on the front panel, but that's not hugely important to me. Bottom line for me: if you want lots of drive bays, including exposed 5.25" bays (for optical drives, or the like) this is a good case for a reasonable price. I added a fan on the side panel, and I understand the complaints about the meshes being impossible to remove for cleaning once the system is built, but it seems to have good airflow. I like the tool-free installation of drives, including the optical drive, and I even used the SSD slot on the back side of the drive bays. The only improvement possible for the drive bays would be to mount them laterally, but that would have airflow consequences, and the case would be slightly less stiff.
W**Z
Good quality name brand case at a fair price
Bought this to build out a modest custom PC. Overall quality is decent but not great. The power button is either poorly manufactured or poorly designed, because it broke within 6 months and a second replacement unit I bought did the same thing in one day. That issue aside, the interior layout and functionality worked well for me. There are also several 5.25” bays available for things like front panel USB headers or optical drives, which is rare these days on PC cases. Plenty of ventilation on all four sides and the top so there are many options for fan placement. One important note is that some current-gen Nvidia RTX 5060 and 5000 series cards may NOT fit in this case. My 4060 fit just fine but the 5060 was very snug and barely fit. Keep that in mind, especially with larger flagship graphics cards. The most appealing feature of this case is the low price. Quality control issues aside, it’s rare to find a name brand case that is this functional at such a low price.
B**B
Standard computer case with multiple HDD slots and plenty of space
I thought the computer case was well designed. Its certainly showing age compared to all the other cases out on the market. However, this case, unlike many modern ones, doesn't have explosive glass as well as limited hard disk drive capacity. I may not use this case in the future for a NAS build, since I already have one (with the NZXT 210 case); but, i'd prefer the industry to continue giving us options instead of forcing us to buy a "NAS based case" for double the manufacturer price; Most cases out on the market these days only come with a capacity for 2 HDD's. Pitiful
M**5
ottimo
J**D
A great case for those who want a simple yes classy design. Enough room for several additional fans if desired, and was mostly easy to work with. Some areas are a bit tricky to deal with compared to some cases that make life simpler, but everything is made solid and most of the case is metal, so there isn't really any cheap plastic involved. This makes for a sturdy case with decent room for whatever you might need in any good-tier computer builds
L**E
The N400 offers a decent number of drive bays and airflow options, but several design choices made the building experience more frustrating than it needed to be. * The PCIe slot covers are flimsy and do not provide much support for add-in cards, resulting in poor alignment with the motherboard slots. * Only two of the 3.5” drive bays include tool-free mounts, while the rest require screws. * The 2.5” SSD mounting system is also of low quality and difficult to manage, making cable routing more challenging than it should be. * There is very little space above the motherboard, which makes it difficult to connect cables, especially when using a tower cooler. While the case technically supports two fans in this area, there is realistically no room for them if a larger air cooler is installed. The same goes for the two fans which can be installed behind the drive bay, as they share the same space as the 2.5" mounting adapter. * The case is not designed with right-angle motherboard connectors in mind, meaning compatibility may vary when using SATA, USB, 24-pin power connectors etc. * The included fans are functional but do not compare well with modern, quieter alternatives. * The dust filters are not easy to remove for cleaning. * The case does not come with common motherboard standoffs pre-installed (e.g those shared by both ATX and mATX), which adds an unnecessary step to the building process. * There is no AIO support here. You might get one mounted on the rear 120mm fan, but that isn't going to be enough for modern hardware. If a budget case with storage capacity is the main priority, it can be made to work, especially as you'll be saving a lot of money vs alternative high-drive capacity cases.
R**.
Como es de esperarse de cooler master, el case cumple con lo que se requería: nada de luces rgb, aunque bien podría haber venido con 3 ventiladores en lugar de solamente 2. Lo compensé comprando un kit extra. En estos días de PCs con SSD, cuesta encontrar un case con más de.3 bahías para unidades de 3.5". Este case cumple la expectativa: puede alojar hasta 8 discos si se usa la bahía pensada para la unidad floppy (si, es un diseño viejo) o bien se puede usar ese espacio para un bracket para montar puertos USB 3.1 y el Tipo C que viene disponible en la tarjeta madre que se montó en este case. La lámina es delgada pero resistente y no es muy pesado, algo que se agradece. Viene con un diseño para montar ventiladores laterales o una solución de water cooling, sin embargo, y de nuevo, al ser un diseño viejo, carece de opciones decuadas para ruteo de cables, que se complica al ser un full tower pero esbelto, lo que limita un tanto el espacio para el cableado. El diseño del chasis tiene un inconveniente con las nuevas tarjetas que traen algunos puertos colocados en forma horizontal y con la entrada de conexión hacia el frente del case. En micaso pasó que los puertos USB 3 y los pueros SATA 1 y 2 estan dispuestos de esa forma y para poder conectar, hubo necesidad de deformar la lámina pues el diseño pensado para el water cooling, tiene un relieve que impide las conexiones. Hacer un buen ruteo de cables, deja inutilizado el espacio pensado para el watercooling/ventiladores extra. A pesar de esos detalles, el case cumple con el requisito principal: Alojar discos mecánicos de 3.5" para un RAID. Está en pruebas, a ver que tal funciona la solución de ventilación instalada ( ventiladores dr alta ganancia) para mantener el equipo fresco.
M**C
Iets meer plaats voorzien voor liquidcooling bovenaan want met speciale rams met heatspreaders zit je met een probleem om cooler te kunnen plaatsen. Heb het moeten aanpassen door dunnere cooler te plaatsen wat niet de bedoeling is. Er is geen beter alternatief voor wie liquidcooling wilt combineren met ingebouwde CD/DVD-player en ingebouwde cardreader
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