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NZXT S340 Matte Black/Blue Steel ATX Mid Tower Case

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  • Steel / Plastic
  • 2 x USB 3.0 / Audio Front Ports
  • 2+1 Internal 3.5" Drive Bays

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews

Interior Layout
A sea of space fills the interior, with the grommet-less steel cable management bar splitting the front intake from the rest of the case and keeping cables hidden and tame.

With 90% of the case being steel, we’re able to deliver superior durability for a case you can keep build to build.


And Then Some.
Comes complete with the basics, USB 3.0 and HD Audio, but gives you even more with high quality materials, a smart interior layout, and tons of cable management potential.


We care about the little things. Steel plated audio jacks, captive thumb screws, and over twenty cable management points are just a few of the small touches that we’ve added.


Measuring in at 445mm high and 432mm long, the S340 bucks the trend of tall, thick cases, enabling you to keep your PC’s footprint to a minimum.

Case Case

Tons of open space and functional design makes this one of the easiest cases to build in that we’ve made to date.

Learn more about the NZXT S340_Blue

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
Ownership: more than 1 year
Verified Owner
5/ 5
Great Case for a minimalist mid size build 5/2/2020 7:42:24 AM

Pros: - Space for components
- Easy to work in
- Love the dust screens, very easy to wash
- Case fans are very quiet when paired with a CPU liquid cooler
- Very nice cable management options

Cons: - Would love this design with a single slot for a slim DVD/CD read write module (call me old fashioned, still have a need for physical media in 2020).
- Slight difficulty getting in my corsair radiator in the front, nothing impossible

Overall Review: Bought the case to upgrade/build a new PC looked for something that could potentially fit on a desk or shelf. I'm into minimalist cases and don't really go after super RGB color cases. This one fit the bill. Used a corsair liquid cooler on the front intake and ran case fans in the back with very reasonable temps. Would definitely recommend to anyone looking for a compact mid-size build with solid construction & quality.

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Ownership: more than 1 year
Verified Owner
1/ 5
Good Case But BROKEN On Arrival 11/12/2019 10:10:20 AM

Pros: The case was a perfect fit for my hardware, had plans to upgrade it future if it were in working condition.

Cons: Damaged product.
I remember putting all the pieces together (Exactly as the manual instructed), and feeling the utter disappointment of not getting a boot. At first I thought maybe it is my power supply that is malfunctioning. I even had the manufacturer send me a brand new one. Just so I could come to the same disappointing conclusion. No Boot. I came to this same result working my way to each and every part of the computer. That is until I had the idea to use my old junk case that I was going to get rid of. Which not only worked, but is holding up to this day.

Overall Review: I wouldn't recommend, because you might end up with a broken case like I did.

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Ownership: more than 1 year
Verified Owner
5/ 5
Solid and Great Case for a Mid Size Build 9/30/2019 8:16:44 AM

Pros: - Able to fit a Noctua NH-D15 SSO2
- Looks Sleek
- Midsize with long GPU support
- Great Quality

Cons: - No vertical GPU mount, but I should have been able to tell from the photos
- Side Panel Window isn't Glass

Overall Review: - I would recommend this case
- Love the Quality
- A Good Amount of Space

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Ownership: 1 month to 1 year
Verified Owner
4/ 5
Nice, Inexpensive Case 7/7/2019 3:27:51 PM

Pros: - Plenty of space inside, and as usual NZXT makes hiding cables pretty easy
- Understated clean black-and-white look with one subtle logo at the bottom
- Plenty of room for 120mm fans and one 140mm, can mount a 2-3 fan water cooler in the front
- Thumb screws make it easy to open up if I need to do anything
- front intake and PSU have nice, removable dust filters

Cons: - The window isn't glass, and the wide bezel and rounded corners detract from the clean look and square corners
- Unused PCI slot covers do not have dust filters, this is where most of it gets into my PC

Overall Review: At this price, I'm overall pretty happy with it. Having owned it for close to a year now, I have no real complaints. I think if I were willing to spend a little more I would get the S340 Elite or H500i, which are redesigns of this case with a beautiful wide window.

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Ownership: more than 1 year
Verified Owner
5/ 5
What a fantastic case 6/16/2019 12:35:06 AM

Pros: -Comes with everything you need, and then some.
-Really easy to use thumbscrews.
-HDD setup to make wiring easy.
-Hides all the ugly wires so well.

Cons: I don't think there are any.

Overall Review: It's a small case so you can't fit a ton in here while keeping it clean. I used a Mini ATX board and an EVGA 960 originally so space was perfect but I wouldn't recommend doing multiple GPU setups or intricate water cooling systems.

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Ownership: more than 1 year
Verified Owner
4/ 5
Great airflow, Came scratched 12/14/2018 7:54:14 PM

Pros: -Comes with two nice fans and create a nice airflow
-Two nice dust filters
-Easy cable managing

Cons: -Case arrived and the window was already full of tiny scratches
-The Matte black version is a dust magnet

Overall Review: -In general, really good case for the price

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Ownership: more than 1 year
Verified Owner
3/ 5
Good aesthetics but hard to configure 11/26/2018 5:53:34 PM

Pros: Looks great. And can fit components in well.

Cons: This thing is tough to configure if you have a hot CPU. The slot where you install liquid cooling fans are behind the front panel and this can cause some issues with cooling if you have a hot CPU. Mine runs super hot so it was an issue for me, but I can't say what the upper limit is and whatnot. Additionally, the fans on the top and back dont have much extra room when you install the motherboard, so you are forced to use the front panel slot for any kind of liquid cooling.

Overall Review: Whether this is worth it or not depends on how hot your CPU runs and if you will use liquid cooling. I personally had some issues but that doesn't necessarily mean you will.

0 out of 1 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
NZXT Best Case I ever assembled 11/18/2018 9:43:53 AM

Pros: Extremely good material, there is a place for every thing

Cons: Nothing

0 out of 1 people found this review helpful. Did you?
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