Exploring the Interior

The MasterBox 5's design and smartly placed tray cut-outs make light work of installing or expanding multiple interior configurations. Remove, slide and rearrange the internal layout to support larger, high-end components, air and DIY water cooling.

Expanding the Possibilities

  • For Storage

Tray cut-outs also allow for the easy mounting and rearranging of SSDs and HDDs across the motherboard tray, along the bottom shelf, or on the back side of the tray (for SSDs).

  • For CPU Coolers

No pushing! There's enough elbow room inside, even for beastly coolers.

  • For Graphics Cards

Titans have a place inside too. Or your next VR-ready GeForce 1080.

Internal Configuration

  • Your Air Cooling Set-Up

The uniquely modular design of the MasterBox creates space where there usually isn't. The case supports

1.Three 120mm fans
2.Four fans with use of optional front bracket

  • Your Liquid Cooling Set-Up

The uniquely modular design of the MasterBox creates space to fit the biggest DIY cooling contraptions

Clean Cabling

  • For Clean Access

All system setups have hidden space for cable management.

Easy Fun

  • Easy Computing

Challenge the confines of the MasterBox 5 by creating intuitive and flexible layouts for components and cables, large or small. Then comes the easy part: building.


Model Number


Available Color



Steel body, Plastic mesh bezel

Dimensions (LxWxH)


500 x 220 x 475mm

Motherboard Support

ATX, Micro-ATX, Mini-ITX

Expansion Slots


Drive Bays


Cages are sold separately

Combo 3.5"/ 2.5"




I/O Port

USB 3.0 x 2

Audio in / out

Pre-installed Fan(s)


120mm x 1


120mm x 1

Fan Support


120mm / 140mm x 2


120mm x 1

Liquid Cooling Support


240mm / 280mm radiator, up to 50mm thickness without fan




CPU Cooler

167mm / 6.5"


180mm / 7.1"


410mm / 16.1"

Cable Routing

Behind Motherboard Tray

25mm - 35mm

Dust Filters

Front, bottom

Power Supply Support

Bottom mount, ATX

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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