Test System

Assembly

Installing a motherboard within the NR400 is pretty straightforward. Things are a bit on the compact side as there is no real space below the board's bottom edge, which is not a real issue because of well-placed openings in the shroud for cable-routing to the right spots. As you can see, the chassis can easily hold a potent 120 mm tower and long GPU.


Adding an SSD requires no tools at all. Just pop the rubber grommets into place, screw the pin-style screws into the drive with your bare hands, and push the drive into place. While this works well, I would be cautious when moving the system longer distances with this setup.


Adding a 3.5" drive does not require tools either as you simply attach the plastic rails and slide the drive into place until it snaps down.


Adding the power supply is done by traditional means. Simply slide it in through the side and use case screws to hold it down. Things are pretty tight, but the 850 W unit fits, which means most users won't have to worry about this aspect either.


With everything installed, the inside of the NR400 looks nice and clean. On top of that, the backside of the motherboard tray does as well with all the cables firmly attached with some zip ties.

Finished Looks

Turned on, the only lighting element from the Masterbox NR400 is the white LED in the shape of the Cooler Master logo around the power button. Attached to the motherboard, the fans are actually nice and quiet under normal operation, which should be a plus for system integrators especially.


You can clearly see all the components inside the case even without any additional lighting as there is little to no tint on the window panel, while the rear is exactly the way you would expect it to be for a current mid-tower chassis.