Cooler Master MasterBox 5 Case Review


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Cooler Master MasterBox 5 Case Overview

The Cooler Master MasterBox 5 is marketed as a mid-tower computer case that features water cooling compatibility without sacrificing airflow. Airflow is achieved through the fan mounting options. With this case, you can have; 2/3* x 120mm or 2 x 140mm fans in the front and 1 x 120mm fan in the rear. All intakes are filtered, including the direct path cooling for the PSU.

*3 x 120mm front requires optional bracket (not included)

Cooler Master MasterBox 5 Case

The front bezel of the MasterBox 5 features a MeshFlow front panel that is easily removable (without removing the side panels) and doesn’t require the entire front bezel to be removed, just to install fans. The front panel is also filtered and houses one of the two pre-installed 120mm fans that come equipped with the case. The front bezel also features two USB 3.0 ports, a headphone jack, a microphone jack, power button, and a reset button.

Cooler Master MasterBox 5 What's in the box

Cooler Master has included and assortment of case screws, radiator screws, zip ties, a fan adapter, warranty information, a brief manual, and a side panel lock.


The left side of the case is just a plain steel panel. There’s not really much more to say about this side of the case.


The bottom of the case features large feet, an externally removable PSU filter, Tie down points, and additional mounting holes. You will also notice in the upper left of this picture, there are 3 slots, these three slots are for the 3 different positions you can mount the HDD/SSD cage along the bottom shelf of the case.

Cooler Master MasterBox 5 Rear View

The rear of the case comes with vented PCI slot covers, a 120mm pre-installed fan, an optional vertical PCI slot (optional bracket would need to be purchased), and of course the I/O panel. You may also notice the odd looking PCI cover at the bottom of the PCI panels, this cover is Cooler Master’s “StormGuard”. The purpose of the StormGuard is for you to route your wired peripherals through the cover and reinstall it, this effectively locks your wired peripherals to the case, deterring theft while your away from you computer. The StormGuard would come in handy if you frequent lan parties or attend college and don’t want your wired peripherals walking away. Make sure to use the optional side panel lock if you worry about theft, as not doing so would merely slow down your would be thief rather than prevent them altogether. Finally, you’ll notice two vertical slots next to the vertical PCI slot, this is a mounting point for Cooler Master’s video card support bracket.

Cooler Master MasterBox 5 Side View

With the windowed side panel removed, you see a blacked out interior, featuring 6 routing holes, a PSU shroud, a large CPU cutout, and a plethora of slots for various accessory mounting options/locations. You’ll also notice the pre-installed SSD mounting plate (upper right hand corner). Sadly, the MasterBox 5 only comes with 1 SSD mounting plate, but you could always mount SSDs in the HDD cage and on top of the HDD cage.


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  1. Parker

    Have you ever seen the *optional fan bracket? I want to buy one but can’t seem to find it.

    1. Jason Vaught

      I recommend contacting Cooler Master at 1-888-624-5099, hopefully they have them in stock and it just wasn’t put on their website.

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