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Cooler Master MasterBox 5 Black & White Mid-tower with Internal Configuration, 6 Routing Cut-outs, Support Up to E-ATX Motherboard, 9 SSD mount positions and 7 Expansion Slots

Ships from United States. Most customers receive within 2-8 days.

Sold and Shipped by BeachAudio a-seller

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  • Steel Body, Plastic Front Cover ATX Mid Tower
  • 2 x USB 3.0 / Audio in / out Front Ports
  • ATX Power Supply
  • Cages are sold separately External 5.25" Drive Bays
  • 2 x Combo 3.5"/ 2.5" Internal 3.5" Drive Bays

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

MasterBox 5
MasterBox 5
MasterBox 5MasterBox 5
Since our founding in 1992 as a thermal pioneer responsible for the first ever heat pipe heatsink, through our evolution into a manufacturer of cutting-edge cases and peripherals, to our recent groundbreaking switch to the modular format, Cooler Master has consistently rewarded its customers and fans with the utmost in innovation, choice, and control.
You Decide the Inside
This case's straightforward design comes with conveniently placed cut-outs, making component installation, interior expansion, and multiple interior layouts simple and easy. The MasterBox 5 can also support larger, high-end components, air and DIY water cooling. Keep your system looking clean with the possibility of using numerous routing holes and covers for your PSU.
  • Flexible Mounting
  • Expansion Support
  • Clean Cabling
  • Compact Cooling
Flexible modularity

Removable SSD brackets, HDD bays, and support for up to 410mm graphic cards allow for multiple system configuration.


* Some accessories required.
Expansion Support

Motherboard cutouts allow you to fit up to E-ATX, while the expensive interior lets you push the limits of liquid cooling with up to 360mm radiator support.


* MasterBox 5 While Edition Being Displayed.
Compact Cooling

Air, All-in-one or DIY water cooling-MasterBox 5's compact but spacious interior allows you to cool down your advanced components anyway you choose.


Learn more about the Cooler Master MCX-B5S2-WWNN-01

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details
Ownership: 1 month to 1 year
Verified Owner
2/ 5
Study case and superb build quality, but an abandoned design.

Pros: no sharp edges, lots of cable tie anchor rings, PSU cover
customizable layout, you can buy extra drive cages, and conversion kit to add 5.25 drive bays.

Cons: Did I say customizable? You won't find anyone selling those drive bays and conversion kits ANYWHERE!!!
They should've told us that Cooler Master has already abandoned the platform and no longer sell parts for it.

Other Thoughts: This case is a pleasure to build on but it is a terrible NAS case because it has no drive bays, it makes a terrible workstation because it has no space to add a card reader. Both of which can be mitigated by adding option drive bays, but they are chronically out of stock on CM's website. That leaves the purpose of gaming, but for that we can get a more compact case. Overall good case but lack of parts market killed its potential.

1 out of 1 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
4/ 5
first build

Pros: great look plenty of space

Cons: wish it had top fan mounts

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
2/ 5
Great Case, bad company website

Pros: Case seems great. Very well made.

Cons: Only 2 HDD drives fit in the bay included. I need 4. Has room for extra drive bays, great. But where can you buy the drive bays? Newegg does not have them. So I tried to order one directly from Cooler Master online store and their website is so bad it won't even allow you to create an account.

Happy with what I got but a company that cannot support a website, let alone a tech company is a very bad sign. Small problem that renders the case useless for me on something really stupid and easy to fix.

Will update this review if they can manage to respond intelligently.

1 out of 1 people found this review helpful. Did you?
Ownership: more than 1 year
Verified Owner
4/ 5
Solid, but limited use.

Pros: It's durable and looks solid, looks better in person than on the picture.
Great material quality.
Nice clear window.
Good fan included.
Roomy, easy cabling, looks solid inside.

Cons: No top vents, why Cooler Master makes all cases now with no top vents? They really help.
Front vents are a bit limited.
No tempered glass
no RGB

Other Thoughts: Looks great with fancy LED fans on the front. You really should max out fans in it as it will look better and without all the fans it may geat toasty. Never use for more than a low-mid range system. Without top vents rear-top will get hot, liquid cooler there will reduce CPU's performance, front mounted radiator may not draw enough air.

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Ownership: 1 day to 1 week
Verified Owner
2/ 5
Only decent for liquid cooled systems and for those who DON'T need an optical drive!

Pros: Feels solid, looks good. Has mounting support for 9 ssd (Which is overkill btw).
If you have a radiator you will have plenty of room for it.

Cons: No optical dive or internal 3.5" support!
No front mesh filter just a piece of plastic with vented sides. Due to this airflow sucks.
There is a front panel & cage upgrade kit out there for this unit but I can only seem to find it on the EU website and its the same cost of the case!

Other Thoughts: Picked this up for $54.99 - $25 in rebates = $30 - $20 after selling the free 212 heatsink it comes with = $10 so I guess I can't complain too much, but still no 5.25" drive support. Come on guys.

0 out of 2 people found this review helpful. Did you?
Ownership: 1 day to 1 week
Verified Owner
5/ 5
Amaing product for the price

Pros: -Lots of space, Has enough room to fit all thw wires from my non-modular PS.
-Even though the front panel has a plastic front cover it still looks amazing
-Looks clean and professional, perfect for both gamers and professional users alike.

Cons: -The plastic panel does reflect like in a way that makes a bismuthy/rainbow look at certain angles on the cover. Nothing too obvious but wanted to put it out there.
-could use another dust filter in the front

Other Thoughts: I would most definitely reccomend this product to other people, this is a great looking and preforming case for its cost

Did you find this review helpful?
Ownership: 1 month to 1 year
Verified Owner
3/ 5
Good Case

Pros: nice build quality, lots of room,

Cons: parts are hard to find ie the SSD brackets, the front cover makes the front fans pretty much useless at times

1 out of 2 people found this review helpful. Did you?
Ownership: more than 1 year
Verified Owner
1/ 5
Motherboard damage from front IO panel header connector, deceptive advertisement: "Optional extras" are not available

Pros: roomy interior, helpful cable management options
Good price point, nice aesthetics

Cons: The front mirror panel does not provide great air flow, there is no "officially recognized" method to install three case fans despite advertisement.
The case is displayed here with either three front case fans or two case fans in the top two positions but you need an "optional" mounting rack and this is not available for purchase anywhere!
The mesh front cover offered with the black version is probably a much better option, sadly you cannot buy this separately either.
This probably wouldn't be an issue if there were other fan mounting options available such as the side or top panels

Other Thoughts: Additional Follow Up:

I recently opened up my tower to diagnose a malfunctioning USB port and discovered that one of the header pins on the mobo was damaged by the USB header connector for the front IO panel, luckily I have another set of USB headers and was able to modify the connector manually (with a steak knife...) allowing me to install the connector without any further damage to the motherboard. I've called their customer service department and have yet to receive a response... time will tell if they ever decide to call me back, but at this point I'm doubtful.

Prior Follow Up:

I've tried contacting Master Cooler numerous times regarding my concerns (below) and I feel I've been blown off every time. I've sent additional messages and left voice mail with no response. I will not be using Cooler Master products in the future due to my experiences with this company. TLDR: Decent product, terrible support and marketing practices.

Original Review Info:

I purchased this case after doing much research. I watched various reviews on this case and it seemed like a great option, especially at the price. The website, the description here and every single video review I watched mentioned that an optional fan mounting rack is needed, which wouldn't be a problem but it's just not available. Had I known this, I would have just gone with the black model, I could have even air brushed it white. I want to like this case, and maybe I'm being paranoid, but instead I'm just worried about running my brand new Skylake machine. I'm very disappointed with this experience. The response from their customer service team is below.

"Apologies, we currently do not carry additional parts for the Master Box 5 White, such as the black mesh panel. The case can be mounted with two 120-140mm fans in the front. Cooler Master Customer Support"

5 out of 10 people found this review helpful. Did you?
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