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Cooler Master MasterBox Lite 3.1 mATX Tower w/ Front Dark Mirror Panel, 3 Customize Color Trims & Transparent Acrylic Side Panel

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  • DarkMirror front panel
  • Customizable trim colors (included in box)
  • Full black coating
  • Transparent side panel
  • Support for up to three 120mm fans & watercooling
  • Graphic card support up to 380mm

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

General information

MASTERBOX LITE 3.1

The Gateway to Stylish Gaming

Focused on good looks, customization and performance, the MasterBox Lite 3.1 mATX case is a great choice for your new little powerhouse. A sleek DarkMirror front panel and three custom trim colors (included in the box) offer a great first entry point for customization. Additionally, it comes with an edge to edge transparent acrylic side panel to show your internal components.

Inside the case you'll find ample room for mAXT/mini ITX motherboard, graphics card up to 380mm in length and CPU cooler up to 158mm high. It also feature bottom-mounted PSU design and adequate cable routing space behind motherboard. And with support for up to 3 cooling fans and a watercooling system, we ensure your performance will not suffer.

3D Printing

Freely Express Yourself

Cooler Master knows the community also has some awesome ideas, and the ability to express them in everything you make or do. So with that in mind, Cooler Master is set to release the 3D printing schematics of the top and bottom trim.

General information

Expanding the Possibilities

For All Your Components

Let your configuration stand out with an all-black background.

General information

For CPU Coolers

General information

For Graphics Cards

General information

DarkMirror Front Panel

Because Your Case Doesn’t Have to Be Boring

A sleek, tinted side window panel and DarkMirror removable front panel allows for easy access to your components. And with support for up to three cooling fans and a watercooling system, Cooler Master ensures that your performance doesn't suffer.

General information


Learn more about the Cooler Master MCW-L3B3-KANN-01

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy.
Ownership: 1 week to 1 month
Verified Owner
3/ 5
Good case for price

Pros: looks nice, good spots for air flow (although better if front panel was off for more air pull), open for good cable management.

Cons: I paired case with A ASUS TUF B350M-PLUS GAMING AM4 AMD
https://www.newegg.com/Product/Product.aspx?Item=9SIA98C7N01878
with plans to use AMD CrossFireX with 2 Rx 580 today I get the motherboard and am still waiting for the other parts but went to place risers and see how It would fit in case and I could not say if this is a case issue or motherboard issue but the top pcie 16x slot form motherboard did not line up with back gpu supports. I hope to get this worked out somehow but It does not look like it will be in this case!

Other Thoughts: delivered on time came, packed well and safe.

Did you find this review helpful?
Manufacturer Response:
Hello Gerald,

I'm not sure if this is what you are experiencing, but the PCI-e slots are often slightly off due to the how most cards are aligned with their own bracket. You might notice how the bracket on your GPU is slightly lower than the part that plugs into the slot on the motherboard. If you are unable to install the GPU at all due to this issue, please contact our support team at support.coolermaster.com.

CM-PNguyen
Ownership: 1 day to 1 week
1/ 5
.

Pros: .

Cons: .

0 out of 17 people found this review helpful. Did you?
Manufacturer Response:
Hello,

Would it be possible to know what merits a 1 egg review from a non-verified buyer of this case? It would help other customers and ourselves look into any issues that you are having.

CM-PNguyen
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Simple but sexy

Pros: This case housed all my cpu components with ease and still has a lot of room. I like the design and having extra accents included is welcomed. Hid all the wires with ease making it looked neat and pleasing to the eye.

Cons: The only downside i see is the small opening for intake, but iam always in an airconditioned room so it really does not seem to cause any overheating. But a better designed front airflow could've been better.

Did you find this review helpful?
1/ 5
Poor ventilation

Pros: it is very cheap and has a attractive looking.
The build material is very solid

Cons: This case has very poor ventilation. The vent in front panel is almost useless.

0 out of 1 people found this review helpful. Did you?
Ownership: 1 day to 1 week
Verified Owner
3/ 5
cheap

Pros: cheap easy to assemble no sharp edges. In general there is a place for every component and enough space for a gpu

Cons: Side is plastic and looks cheap power cable routed through the back is a tight fit.

Other Thoughts: was a decent choice for me I was looking for a small case for a microatx build. But you get what you pay for.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
3/ 5
The good looking case with some minor issues.

Pros: 1. good looks
2. Good sizing
3. Good design over all

Cons: 1. Little lacking in Rear cable management
2. Restrictive front intake. Not for systems that run hot
3. Plexi front and side panels.

Other Thoughts: Over all it is a good case. The inside is well layed out but could use some improvements on cable management. Making the case wider coudl help with several cable management issues. I would have al liked to see a mesh front panel instead of the plexi. It would provide better air intake compared to current design. Would though Cooler Master would have learned this with previous Master Case models. A PSU shroud would have also been nice. Adding some width to the case could help with this. it doesn't have to be full length, but maybe just partial. Also would like to see the Tempered Glass side panel or a more substantial side panel with plexi insert rather than the full plexi side panel. Over all it is a good case for a system with low TDP, but needs improvements to handle high heat generating systems.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
1/ 5
Wouldn't reccomend this case to anyone

Pros: decent looking case

Cons: HORRIBLE airflow. almost non available in this case. My PC components cook inside of this case. the only available airflow coming into this case is from a small 1 inch wide slit at the bottom of the front panel. other than that, nothing. This case is not capable of being used for a low budget gaming PC

The rear of the case does not have enough room for even the smallest amount of cables from a low wattage Power supply.

Other Thoughts: I would not recommend this case to anyone
I will not buy this case again. there are much better options available for the same price or lower

2 out of 14 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
5/ 5
I love this case

Pros: +So much room for a full size graphics card
+Very practical case, allows for good cable management
+Allows for great airflow
+Aesthetically pleasing
+Changeable trim

Cons: None

Other Thoughts: I expected a very neat, micro case. I was surprised at how it exceeded my expectations. Very spacious, highly recommend.

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