Cooler Master MasterCase Pro 3 Micro-ATX Chassis Review

A Closer Look – Interior

Despite the new form factor, the interior of the Pro 3 is anything but small. While the height of the chassis has been reduced, it’s hardly limiting in terms of depth or length, and those with extremely long graphics cards won’t be running into compatibility issues any time soon. There are some pre-installed motherboard stand-offs for mini-ITX boards, although more are included in the box for Micro-ATX boards. There’s a huge CPU cooler mounting cut-out at the back, as well as two large rubber grommets to help with cable routing.

There’s a two compartment design, with a divider that hides the PSU from view, but to make better use of that panel, you’ll also find two dedicated 2.5″ drive mounts on the top of it, as well as a large routing grommet to easily pass through cables from the PSU to your graphics cards.

There’s a vast amount of space in the front for radiators and other cooling hardware, and while there are no 3.5″ drive mounts here, you can take out the 2 x 3.5″ drive bay in the bottom of the chassis and mount it at any height you desire in the front of the chassis thanks to those vertical mounting holes. You can even buy more drive bays from Cooler Master and increase the number of available bays if you so desire.

The PSU shroud has a large cut-away at the front too, so with the bottom hard drive bays removed, you can easily install a full-height thick radiator.

Both 3.5″ drive mounts are tool free, although you can screw 2.5″ drives onto the trays if needed. The bay is fitted with thumbscrews, so you can quickly remove or move it around as needed with ease.

The cavity for the PSU is huge, meaning you’ll have extra space to store excess cables out of sight.

There are thumb screws on the expansion slots for easy access, and there’s even a cable holding bracket on the five bay to lock your peripherals into the system; very handy for those who visit LAN gaming events.

The rear 140mm fan, just like the front 140mm fan, comes in all black with a black 3-pin PWM cable.

There’s a good amount of space behind the motherboard for cable routing, so getting a neat and tidy build should be a breeze.

While you’ll find cable tie loops all over the place, there are also three durable Velcro straps for you to hold down excess cables also.

You’ll also find two more cable routing holes near the top of the motherboard, handy for dealing with motherboard and top mounted cooling cables.