The Cooler Master Masterbox NR400 is a compact and affordable case. It offers almost the same feature set and material mix as its bigger brother, the NR600, which has a similar conclusion make sense. There is, however, one noticeable functional difference: in the NR400, you are able to move or completely remove the HDD cage underneath the shroud to allow for a thick radiator or a really large PSU in the front.

Just like the NR600, don't expect the NR400 variant to push the envelope with unique features. Instead, it aims to offer a good material mix and all the must-have features of a modern mass market mid-tower enclosure at a good price. While the metal mesh front may not tickle everyone's fancy, Cooler Master has made it fine enough to act as a pretty useful dust filter on its own, and the solid stripe down the side does give it that little extra such a case needs.

As it is also geared towards system integrators, Cooler Master has made sure to minimize its own branding with just the power button and a small stamp on the side of the chassis hinting at who actually manufactured the NR400.

We naturally love the partial glass side panel and all-metal shroud. The same goes for the fact that the Mastercase NR400 is functional without being compromising despite its more compact size, offering you plenty of air and liquid-cooling potential, hard-drive storage space, and GPU expandability.

At $60, the case is priced as expected and a whole $10 cheaper than the bigger NR600. That said, anyone building an mATX system who doesn't mind the metal mesh front or maybe even loves the fact that it is a big air vent should be quite happy when assembling their system. Overall, the Cooler Master Masterbox NR400 is not here to blow your socks of as it instead aims to offer form and function at a reasonable price.