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

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In stock. Limit 50 per customer.
Ships from United States.
  • Box E500L
  • Box Lite 3.1
  • Box Lite 3.1 TG
  • Box Q300L
  • Box E300L
  • Box Q500L
  • Box MB311
  • Box MB320
  • ARGB
  • Blue LED
  • Red LED
  • Non-LED
  • Solid Panel
  • Tempered Glass
  • Transparent Panel
  • Dark Mirror Front Panel
  • Customizable Trim Colors (included in Box)
  • Full Black Coating
  • Transparent Side Panel
  • Support for Up to Three 120mm Fans & Water Cooling
  • Graphic Card Support Up to 380mm

General information


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

Warranty & Returns

Warranty, Returns, And Additional Information


  • 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's Standard Return Policy