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The MasterCase 5 Series​

At heart, the MasterCase 5 advocates a new relationship that binds component makers and users closer together. Its elegantly smooth, flexible FreeForm Modular System supports multiple outlooks, allowing you to upgrade rather than entirely replace your case as your needs change over time.

FreeForm™ Modular System​

We want you to have absolute control over how your case looks and functions. The FreeForm™ Modular System of the MasterCase 5 lets you adjust the exterior structure and aesthetic via a range of replacement panels and doors. Each choice changes the look and feel of the case, but also the flexibility of the interior layout.

Customize with External Modularity

Easily customize your case by adding a top cover and water bracket for a new look along with liquid cooling radiator support, freeing up space inside the case. And if you want to show off your system, a window side panel is also available. These options are included in MasterCase Pro 5 version or available separately.

Adjust Internal Layout Clip-and-Click Panel

But this isn't just about aesthetics. Each decision opens new possibilities.
Leveraging our unique clip-and-click panel, FreeForm lets users vertically adjust or entirely remove your optical disk drive (ODD) and HDD via sliding locks so intuitive you'll play with your configurations just for fun. Well, some people will. Just click-in the cages, and adjust the height to suit your needs. Position them at the top to allow room for up to three extra-long graphics cards, or retain only the bottom positioned cages to add a front-mounted radiator for even more cooling options.

Unmatched Ventilation​

FreeForm enables the option to install three front-mounted 140mm fans and a 280mm radiator for unmatchable ventilation due to a unique facility to horizontally shift the bottom-mounted hard disk drives. There's also support for up to six 140mm fans through the case, unique for a mid-sized tower.


CoolerMaster MCX-0005-KKN00 MasterCase 5 ATX Mid Tower Case
  • ATX, Micro-ATX, and Mini-ITX Support

  • Steel Frame & Windowed Side Panel

  • Two 5.25" Drive Bays

  • 2 x 3.5" Drive Bays

  • 2 + 2 x 2.5" Drive Bays

  • Seven Expansion Slots

  • Two USB 3.0 Type-A, Audio In/Out

  • Two 140 mm Fans Included

  • FreeForm Modular Design

  • Support for Liquid Cooling Systems


Case Material SECC, plastic

Motherboard Support ATX, Micro-ATX, Mini-ITX

Drive Bays 2 x 5.25" 2 x 3.5" 2 + 2 x 2.5"

Expansion Slots Seven

Front I/O Ports 2 x USB 3.0 Type-A 1 x Audio in
1 x Audio out

Power Supply ATX PS2 (not included)

Cooling Capabilities Front: 3 x 120/140 mm (1 x 140 mm included) 

Top: 2 x 120/140 mm 

Rear: 1 x 120/140 mm (1 x 140 mm included)

Radiator Support Front: 240/280 mm, Up to 40 mm thick without fan 

Rear: 120/140 mm

Compatibility Graphics Cards: 

With 3.5" HDD Cage: 11.7" (296 mm) 

Without 3.5" HDD Cage: 16.2" (412 mm)

CPU Cooler: 7.5" (190 mm)

Dimensions (L x W x H) 18.1 x 9.3 x 14.2" (460 x 235 x 360 mm)

Weight 23.4 lb (10.6 kg)

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