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Cooler Master - N400 ATX Mid Tower Case

( 4.0 Average / 11 Ratings )



Cooler Master



Part #





ATX Mid Tower

Includes Power Supply


External 3.5" Bays


External 5.25" Bays


Internal 2.5" Bays


Internal 3.5" Bays


Motherboard Compatibility

ATX, Micro ATX, Mini ITX

Front Panel USB 3.0 Ports


Maximum Video Card Length

320 mm / 12.598"


189 mm x 425 mm x 501 mm

Completed Builds Using This Part

See All Completed Builds


Merchant Base Promo Shipping Tax Availability Total
Monoprice $59.99 Out of stock $59.99+
SuperBiiz $55.99 +$16.99 s/h $72.98
PCM $65.99 +$26.06 s/h In stock $92.05
Amazon $91.74 +$11.67 s/h In stock $103.41
( 1 new from $91.74. Last updated 1 hour ago. )
* Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

Price History (Excluding Tax) History:


manojsankar 8 points 38 months ago
from completed build The Flying Fish

Pretty solid case.

lq0000 6 points 31 months ago
from completed build Skylake research workstation

Great professional aesthetic and has lots of space. Also comes with lots of hardware, which is quite useful. Only downside is that the PCI bay covers are break-off and can't be re-attached.

kendallcubed 13 points 29 months ago

Tons of airflow. If you have thick circular cables, there is no hope at cable managing this. It should be fine if you have individually sleeved cables.

createadebate 8 points 7 months ago

So I bought this case after one too many things broke on my other case. I specifically looked for an ATX Mid Tower case, as I had accidentally bought a microATX case previously that had made my build very cramped and restricted what motherboards I could use. Other than that, I looked for something with space for a Blu-ray player, onboard USB 3.0 headers (for for a potential upgrade in the future), good airflow, horizontal drive mounting, and a design that didn't look like the writers of "Hackers" came up with it. This is the cheapest case that met those conditions.

Overall, it's been a good case. The build quality is fairly good. Initial setup went alright. The instructions weren't as clear as I would've liked, but I managed. There's plenty of space inside to work with, so no cramped wires. The holes for external disk mounting come with covers that can be put back on again, so opening the holes isn't a permanent choice. The same doesn't go for where the graphics card ports go, but oh well.

I really like the setup for mounting disks. Lots of space, and horizontally mounted.

The whole front of the case is one giant grill, and it's got several more on every side. This, alongside having space for a lot of fans, makes for great airflow. Also comes with dust filters which are really handy.

There were only two really dumb parts of this case. First, the 2.5" slots advertised were really just a piece of plastic that hangs vertically from the closed side of the case (the one the back of the motherboard faces). It's an awkward location to try to connect wires to. I just bought something else to mount them alongside the 3.5" drives. And second, the primary side panel doesn't close properly. The latches don't slide into the holes all the way, and I kinda have to force it. But it doesn't cause problems besides looking unsightly.

It isn't perfect, but I'm happy with it and will probably be using it for a long while.

I got this case for $59.99 on Amazon.com in September of 2017. There was a large rebate included, but I don't remember how much for.

M1sterRogers 3 points 2 months ago
from completed build $1000 AMD Workstation

Wonderful case. Very roomy and easy to build in. I only wish there were a couple gaps above the M/B tray to pass cables through.