TheMasterCaserepresents the crest of a new wave of case technology, pioneering our uniqueFreeForm Modular System, which allows you to expand your case by replacing exterior elements, including top panels and the case door, as well as offering unparalleled flexibility to reconfigure the case interior.

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. Go with either basic dual top handles and standard door of the MasterCase 5 or an elevated mesh top cover of the MasterCase Pro 5.

FreeFormâ„¢ 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.

Integrate replacement accessories like:

  • Fan brackets
  • Water cooling reservoirs
  • GPU support brackets

Slip-and-Clip Pockets

The first Cooler Master case to incorporate two easy to install slip-and-clip solid-state drive pockets (2.5") with four easy mounting positions. Showcase them on the partition panel or hide them behind the motherboard tray for a cleaner look.

A.Two behind the motherboard tray

B.Two on top of power supply partition

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.


FreeForm extends beyond the case to include all the support you need in terms of selecting and purchasing components through a range of accessories to truly help you Make It Yours.




Model number

MCX-0005-KWN00 (windowed)

Available Color(s)

Exterior: Dark metallic grey

Interior: Black


SECC, Plastic

Dimensions (WxHxD)

235(W) x 548(H) x 512(D) mm



M/B Type

ATX, microATX, Mini-ITX

5.25" Drive Bays

2 (exposed)

3.5" Drive Bays


2.5" Drive Bays


I/O Panel

2x USB 3.0

1x Audio In & Out

Expansion Slots


Air Cooling Compatibility


2x 120/140mm


3x 120/140mm


1x 120/140mm

Water Cooling Compatibility


240mm radiator, max. 40mm thick w/o fans (only with Top Cover kit)


240/280mm radiator, max. 40mm thick w/o fans


120/140mm radiator

Included Fans


1x 140mm, 1200RPM, 24dBA, 55CFM


1x 140mm, 1200RPM, 24dBA, 55CFM

Dust Filters

Front / Top / Bottom

Power Supply Type

Bottom Mount

Standard ATX PS2 / EPS 12V

Maximum CPU Cooler Height


Maximum GPU/PCI Card Length

412mm (without cage)

296mm (with HDD cage)


2 years

EAN Code

4719512052488 (MCX-0005-KWN00)

UPC Code

884102028595 (MCX-0005-KWN00)

No additional files, specification sheets, guides or documentation found for product.

Warranty: 24 Month Return To Base

Full manufacturers warranty details are available at the manufacturers (CoolerMaster) web site.

Unless otherwise specified Techbuy is normally your first point of contact for warranty related returns, further information regarding our warranty policies and consumer guarantees is available on our policies and service & support pages.

To apply for return of a product just go to our returns page.

These terms are in addition to and do not affect any terms, conditions, guarantees and warranties implied by law.

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