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Cooler Master Mid Tower Micro-ATX/ATX Computer Case (Midnight Black)

BH #CON400NSMTCC • MFR #NSE-400-KKN2
19 reviews
Cooler Master Mid Tower Micro-ATX/ATX Computer Case (Midnight Black)
Key Features
  • Polymer, Mesh Front Bezel
  • Side Panel Security Lock
  • Removable HDD Cage
  • 4.7" Liquid Cooling Radiator
The midnight black Mid Tower Micro-ATX/ATX Computer Case from Cooler Master has extensive cooling support and air cooling performance. It supports a 9.4" liquid cooling radiator or two 4.7" fans on the right side or at the top. The case also supports high-end graphics cards up to 12.6", including NVIDIA GTX 690 and AMD HD 7990. It provides three dust filters on top, right side, and bottom for easy maintenance, and supports a 4.7" liquid cooling radiator in the rear.
Temporarily Out of Stock
Expected availability: 2-4 weeks
$84.00
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Cooler Master N400 Overview

The midnight black Mid Tower Micro-ATX/ATX Computer Case from Cooler Master has extensive cooling support and air cooling performance. It supports a 9.4" liquid cooling radiator or two 4.7" fans on the right side or at the top. The case also supports high-end graphics cards up to 12.6", including NVIDIA GTX 690 and AMD HD 7990. It provides three dust filters on top, right side, and bottom for easy maintenance, and supports a 4.7" liquid cooling radiator in the rear.

Mesh front panel with large vents
Supports a 9.4" liquid cooling radiator or two 4.7" fans on the right side and at the top
Supports up to three SSDs, two on the tool-less 2.5" cage and one at the bottom of HDD cage
Supports a 4.7" liquid cooling radiator in the rear
Includes two XtraFlo 4.7" fans without LED arranged for optimum airflow with support for up to eight fans
Supports high-end graphics cards up to 12.6", including NVIDIA GTX 690 and AMD HD 7990
Dual Super Speed USB 3.0 ports
UPC: 884102023293

Cooler Master N400 Specs

Compatibility
Motherboard SupportATX, Micro-ATX
External Drive Bays2 x 5.25"
1 x 3.5"
Internal Drive Bays7 x 3.5"
and
3 x 2.5"
Expansion Slots7 x Full Height
Maximum GPU Length12.6" / 32 cm
CPU Cooler Height6.4" / 16.2 cm
Supported PSU SizeATX
Maximum PSU Length7.09" / 18 cm
PSU Mounting LocationBottom
Cooling
Fan Mounting (Front)2 x 120 mm
Fan Mounting (Rear)1 x 120 mm
Fan Mounting (Side)2 x 120 mm
and
1 x 140 mm
or
3 x 120 mm
Fan Mounting (Top)2 x 120 mm
Fan Mounting (Bottom)None
Fans Included (Front)1 x 120 mm
Fans Included (Rear)1 x 120 mm
Fans Included (Side)None
Fans Included (Top)None
Maximum Radiator Size (Front)240 mm
Maximum Radiator Size (Rear)120 mm
Maximum Radiator Size (Side)240 mm
Fan Mounting (Internal)None
Fan Controller IncludedNo
Filter LocationsBottom, Side, Top
I/O
I/O2 x USB-A (USB 3.0 / 3.1/3.2 Gen 1)
2 x USB-A (USB 2.0)
Audio I/O1 x 3.5 mm Input
1 x 3.5 mm Output
Display OutputsNone
Physical
Windowed PanelNo
MaterialPlastic, Steel
CertificationsCE, FCC
*as per Manufacturer
Built-In LightingNo
Cable Management SpaceNone
Dimensions (W x H x D)7.5 x 16.7 x 19.7" / 190 x 426 x 501.4 mm
Weight12.3 lb / 5.6 kg
Packaging Info
Package Weight14.8 lb
Box Dimensions (LxWxH)22.2 x 19 x 9.6"

Cooler Master N400 Reviews

Nice mid-tower with room for growth

By Richard
Rated 5 out of 5
Date: 2023-01-06

As a non-gamer I was looking for a computer case with adequate cooling for upper end processors, room for growth, and sturdy construction. If you are like me and looking for a quality product and have no intentions of covering it in RGBs and could care less about seeing its insides after assembly, this case should serve you well.

Good case

By Chester
Rated 5 out of 5
Date: 2022-05-24

Good case for the price. Easy to take advantage of features.

Excellent case

By Manucher
Rated 5 out of 5
Date: 2021-11-15

Very well designed for ATX/Micro ATX motherboards. Great value for money.

Does the job

By Teacha L
Rated 5 out of 5
Date: 2021-05-23

I wanted a case that would fit everything and not flash bright lights in my room at night. It was easy to build in it and functions well.

OK, but not outstanding.

By James
Rated 4 out of 5
Date: 2021-03-14

I have used Cooler Master cases for many years, and this one looks good and has the right layout. Nevertheless, it has lighter gauge steel and somewhat sloppy manufacture. For example, the holes for mounting the motherboard are just a wee bit off the mark. While I believe it represents decent value for the price, it does not seem as well made as my previous Cooler Master cases. Not bad for the price - just not excellent. TT

Unable to connect the front USB 3.0 cable

By Shuli
Rated 2 out of 5
Date: 2021-02-18

I am building a computer as a home file server. I was looking for a cheap case that has plenty of room for my 3.5'' HDDs and portable disk enclosures. This case looked quite a good fit (7 3.5'' HDD and 4 2.5'' disks). Especially, it doesn't have an enclosed PSU chamber, which is actually preferred because I use a fanless PSU. Given the price point, I didn't expect too much from this case. So it is acceptable that this is no design effort made for cable management and the case is a little bit flimsy. The build quality is so so, I actually got my finger cut when installing the components -- I was fine with this. However, this is a serious design failure: the level of the motherboard is LOWER than the surrounding area, making it is difficult or even impossible to connect cables to motherboard connectors with horizon orientation. In my case, I cannot connect the front USB 3.0 cable to the motherboard. I tried with some force, just got one pin in the connector bent (Pic 1). I checked my other computer. The motherboard has the same design, but no problem at all (Pic 2). I can't recommend this case even at its current price. For example, NZXT H510 costs only $10 more, and it has a way modern design and great build quality. I would go for it if I don't need many slots for 3.5'' HDDs.

Just as it looks - good.

By Adrien
Rated 5 out of 5
Date: 2022-12-29

Just like it looks, there's lots of airflow from front-to-back and also out the top, and plenty of hard drive bays. Perfect for putting a home server inside, some quiet lower-speed fans, and having it run cool and happy.

Good case

By Chester
Rated 5 out of 5
Date: 2022-05-24

Good case for the price. Easy to take advantage of features.

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