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Case

Cooler Master MasterBox Q300L MicroATX Mini Tower Case

(45 Ratings, 4.5 Average)

Prices

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£37.99 +FREE s/h Out of stock £37.99 Buy
£39.97 Free two-day shipping with Amazon Prime In stock £39.97 Buy
( 29 new from £39.97. Last updated 3 hours ago. )
£39.98 +£2.95 s/h In stock £42.93 Buy
£44.99 In stock £44.99+ Buy
£39.98 +£5.48 s/h In stock £45.46 Buy
£39.98 +£5.99 s/h In stock £45.97 Buy
£39.98 +£5.99 s/h In stock £45.97 Buy
£49.64 +FREE s/h In stock £49.64 Buy
£52.85 +FREE s/h In stock £52.85 Buy
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Specifications

Manufacturer

Cooler Master

Part #

MCB-Q300L-KANN-S00

Manufacturer

Cooler Master

Type

MicroATX Mini Tower

Color

Black

Power Supply

None

Side Panel Window

Acrylic

Power Supply Shroud

No

Front Panel USB

USB 3.2 Type-A

Motherboard Form Factor

  • Micro ATX
  • Mini ITX

Full-Height Expansion Slots

4

Half-Height Expansion Slots

0

Maximum Video Card Length

360 mm / 14.173"

Dimensions

  • 387 mm x 230 mm x 378 mm
  • 15.236" x 9.055" x 14.882"

Internal 2.5" Bays

2

Internal 3.5" Bays

1

Volume

  • 33.646 L
  • 1.188 ft³

Price History

    Reviews

    Magicman1231
    • 31 points
    • 11 months ago

    A little tight to work in. But don't let that deter you, this case looks really good and I love the small form factor. Cooler Master was very innovative with the modularity of this case.

    Lavazutra
    • 25 points
    • 18 months ago

    from completed build Tiny and Tidy

    For the price tag....it is awesome. Small and specious, good looking and easy to work with. It has some minor issues though. 1. No antivabration mounts for the 3,5" HDD 2. Acrylic side window....dust/scratch magnet. 3. the pre drilled holes in the front panel cause air turbulence, which leads to more noise at high fan rpm (140mm fans)

    Everything else is good and well thought.

    Executablefiles
    • 23 points
    • 7 months ago

    from completed build A Year's Hope

    Looks nice and provides good airflow. Cable management could have been a bit easier but was still easy to do.

    GoldenBunion
    • 20 points
    • 4 months ago

    from completed build First Build: AMD Micro ATX

    Nice case, especially for newbies. Cable management can feel a bit tight due to the size of the case and a power supply cover would have been nice. Biggest gripe. The side panel is plastic, dusts up and has a risk of scratching (have one after day one).

    steveheavy
    • 18 points
    • 19 months ago

    from completed build Downsized Build

    One of the best cases I've ever seen, only downside is the acrylic panel is a dust magnet.

    elvarg9685
    • 16 points
    • 16 months ago

    Now this is the true star of my build. I love how easy it was to build in. The cable management was super helpful. Only complaint I have is that the magnetic screens on the exterior of the case fall off easily so I'm taking a star.

    dannybae.16
    • 15 points
    • 12 months ago

    $60?! This thing is literally one of the nicest cheap cases I've ever seen. Firstly, it looks like it's $200, and you get space for 6 120mm fans. Also, the cable management is just so clean. You get at least 2.5cm in the back for routing cables.

    Rsd95
    • 13 points
    • 12 months ago

    Cable management was easy. No issue with the filters like some other people had. They are a bit loose and easy to accidentally move, but it’s not a problem as long as you don’t grab it much. IO panel is movable which is nice. Feels like lots of space for a micro ATX case. Holes on the front and top for RGB switches is convenient.

    AstroVelasco
    • 12 points
    • 10 months ago

    from completed build I Should Be Studying

    Love this freaking case! Again, as a first time builder, I was a little intimidated and unsure of how to accomplish the task, but this case made the entire process much, much easier. Great cable management. Lots of free-play when it comes to customization. Spacious, yet it seems compact from the outside. It's perfect!

    Jcw93
    • 12 points
    • 9 months ago

    from completed build PhlegmaticCulture

    This case is bad*ss for a micro! Super easy to work with! Better cable management than my full size thermaltake case.. PSU harness removes which helped a LOT for routing cables on my non modular PSU

    Overall very happy with this case and I was quite nervous about using it since I’ve never built in such a small case before.. it feels a lot bigger than it actually is

    The acrylic side panel is a buzzkill though.. smudge and dust magnet like crazy bad - but I’m sure there’s a way to easily overcome that issue with enough patience

    Builds Using This Part

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