|The interior is simple and clean, and it features a most classic design with some noticeable features. Cooler Master decided to use a midplate between the PSU area and the motherboard. It is by far not the first time that we find this in a case anymore. In our opinion, this allows for better cable management. The Master Case 3 Pro has been built with enthusiasts in mind an therefore there is space for custom water cooling gear, such as radiators. Nevertheless you can equip this case with two 3.5" HDDs and two 2.5" drives, whereas both can be installed using tool-less sledges. If this is not enough for you there are Cooler Master's modular cages, which allow you to install additional hard drives. The motherboard tray is made out of solid steel, and it features a big opening behind the socket, which allows for the installation of aftermarket CPU coolers without taking the motherboard out. The tray comes with rubber grommeted openings allowing for a neat cable management. Between the motherboard tray and the right side panel there is enough space to hide plenty of cables. The MasterCase 3 Pro is compatible with mATX motherboards and it's also compatible with a large amounts of coolers and radiators.
For our test we used an mATX motherboard and a water cooler with 120mm radiator. As you can see from the pictures there is plenty of space for fans and radiators. The MasterCase 3 Pro is able to accommodate a CPU cooler with a maximum height of 190mm and graphics cards can measure up to 370mm in length. In other words you can install any CPU cooler without checking the space available.