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Cooler Master > 
Item#: N82E16811119256

Cooler Master Elite 431 Plus - Mid Tower Computer Case with Windowed Side Panel and USB 3.0

  • Steel Body (0.5mm SECC), ABS plastic ATX Mid Tower
  • USB 3.0 x 1 , USB 2.0 x 2, Mic x 1 , Audio x 1 Front Ports
  • 3 External 5.25" Drive Bays
  • 5 Internal 3.5" Drive Bays
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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The new Elite 431 Plus builds upon Cooler Master expertise and delivers high-end features in the affordable market space. Cooler Master believes that just because something is affordable, it doesn’t have to lack features or be a “budget” product.

The Elite 431 Plus features a classic black Cooler Master design with clean, yet attractive lines. It has been built to last and uses high quality materials, unlike many “budget” products that tend to use cheaper materials that don’t last. It’s also been designed to keep the components inside the case cool and not only does it have space for plenty of additional cooling fans, but it can also be fitted with large CPU coolers, such as the Cooler Master Hyper 212 Plus.


  • newegg Excellent Cooling The COOLER MASTER Elite 431 Plus comes with one front 120mm blue LED fan, front ventilation design and four extra fan mounts for efficient ventilation and effective system cooling.
  • newegg External SATA X-Dock The external SATA X-Dock allows hot-swap data access to your 3.5" SATA HDD, eliminating the hassle of opening case and groping for the cables.
  • newegg Transparent Side Window The transparent side window provides a direct look of inner system. The blue LED fan gives out mystic light for an eye-catching fun.
  • newegg Easy Installation The tool-less design for 5.25" and 3.5" drive bay enables easy installation and upgrade. It also supports ultra-long VGA card within 400mm, making it an ideal dwelling for high-end card.
  • newegg Bottom Placed PSU The bottom mounted PSU design allows for independent and optimized cooling.
  • newegg Convenient I/O Panel One USB 3.0 port, two USB 2.0 ports and one mic jack & headphone jack allow easy access to a variety of peripherals.

Learn more about the Cooler Master RC-431P-KWN2


Elite 431 Plus


ATX Mid Tower
Case Material
Steel Body (0.5mm SECC), ABS plastic
With Power Supply
Power Supply Mounted
Motherboard Compatibility
Micro ATX / ATX
With Side Panel Window


External 5.25" Drive Bays
External 3.5" Drive Bays
Internal 3.5" Drive Bays
Expansion Slots

Front Ports

Front Ports
USB 3.0 x 1 , USB 2.0 x 2, Mic x 1 , Audio x 1

Cooling System

80mm Fans
120mm Fans
1 x 120mm Blue LED fan
Side Air duct

Physical Spec

7.55" x 16.8" x 19.6"
11 lbs.


Front 120mm Blue LED fan for better airflow

Tool-Free mechanical design for quick assembly and maintenance.

Easy access front I/O panel.

Supports long graphics cards including HD Radeon 6990

Includes USB 3.0 for faster data transfer

External SATA X-Dock (1 x 3.5" External SATA HDD Bay - converted from one 5.25" bay)

Cooling System:
Front: 120mm Blue LED fan x 1, 140mm (optional)
Top: 120mm fan x 2 (optional)
Rear: 80/90/120 mm fan x 1 (optional)
Bottom: 80/90/120mm fan x 1 (optional)

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Cooler Master RC-431P-KWN2

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  • Anonymous
  • 11/26/2014 1:05:46 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

3 out of 5 eggsReview after 4 yrs use; Cooler Master 431 Elite Plus case

Pros: Plenty of room for cooling fans (5). c/w one installed. Water Cooling "openings" if required
Plenty of room for HD's (5), or more if you use ext 3.5 and 5.25 bays
Tool Free
Fits full size Video card (12 inch), depending what other hardware you.
Quality of case is good (compared to some mid range mid tower cases) install.
Hot Swap Bay!
Looks good!

Cons: 1 - Poor cable management!
2 - HD and Rom drive tool free brackets are lacking. 2 for ROM drive (that's ok), however Cooler Master should have included brackets for all available int 3.5 HD bays (5 available, came with 2). I had to purchase 3 sets separate at a cost of $15.00 extra.
3 - Rear slot covers are not replaceable once you have removed them. If you need to replace, you must buy separate.
1 Mobo "Stand off" screw stripped, Be careful when installing

Other Thoughts: Overall, after 4 yrs of use; I am happy with this case. Lost 2 eggs for above cons,however, I would still recommend this case. If you are going to install lots of hardware, buy a bigger case with better cable management.
My rig;
Z68 mobo
i5, 3.3, second gen. CPU
8 GB's ram
550 PSU
550ti GPU
3 - 3.5 HD's (1-primary 10,000 rpm, 2 - 7200 rpm storage
With stock CPU fan and 3 case fans, PC idles at 34-38 deg C. Under load 55 deg C (max)

My rig runs like a top!

Happy with case (other than cons above). I would recommend, depending on usage.

Did you find this review helpful? Yes No

  • Michael G.
  • 10/26/2014 9:11:59 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsLOVE this case!

Pros: Well-built, comes with a gaggle of screws (all black to match--nice!), good-sized window, lots of space for drives, easy to work with. GOBS of room for 120MM fans. Great circulation.

Cons: None so far. If I had to list one it is that the PCI slot "covers" aren't the removable, screw-in kind--you have to permanently break them out of the case. Which is fine, unless you're a knucklehead like me and remove the wrong one and now I have an open gap in the back. The glowing power LED can be annoying at night as well, but I just unplugged it from the motherboard.

Other Thoughts: My son bought one of these cases and I liked his so much I thought I'd get one for my new build as well. I like the PSU-on-the-bottom set-up. Plenty of room to work in. I love the built-in bay for a removable SATA device--easy to plug an SSD in there. I'd definitely recommend.

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  • Donald D.
  • 10/11/2014 1:29:41 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsNice LOOKING case

Pros: Nice looking case, wide enough for Cooler Master Hyper 212 Evo CPU cooler (more on that in it's review). Medium weight steel case for better sound deadening. Easy drive mounting, lots of room for cable management between motherboard and drive bays, but not behind motherboard.

Cons: Break away tabs for PCI slots, not re-usable. Make sure you break out the correct ones or you will be scrounging for old filler tabs.

Poor threading for side panel thumbscrews and stand-offs. Hard to start and easy to cross-thread. Got 2 standoffs in slightly crooked and then the screw from the motherboard side cross-threaded in the standoff. Fortunately my motherboard only required 6 standoffs, as I used 2 of the three extras to replace cross-threaded ones. Could barely get the CPU heatsink backing plate off through opening on the back (Asus M5A97 Motherboard). They could make that hole go at least 1mm lower on the panel behind the Motherboard.

The cable connector for the front panel USB 3 port is a funny 20 pin connector that does not fit anywhere on my motherboard, thus the front pane USB3 is not functional until I find a PCI card that works with it.

The included case fan was only a 3 pin connector, making Motherboard fan control less effective. Also, it came mounted in the front bottom of the case, and it's ridiculously short cable was not long enough to reach any fan connector pins on my motherboard,. Unless you have a fan connector on the lower forward corner of the Motherboard, it will not reach. The only way to power that fan would be with a cable extender or directly from the power supply which means running at full speed (and noise) all of the time. That fan got moved to the back upper rear of the case where the cord would reach a Motherboard connector, and the 4 pin fan I bought extra is now in the front of the case.

Other Thoughts: I've done multiple builds. Liked the Cooler Master Storm Scout case, (as well as MY Thermaltake case), but this one was on sale, so gave it a try. It worked, but there were a few items that were frustrating, like poor thread tapping.

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  • David P.
  • 10/6/2014 6:53:09 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsCase

Pros: Great design, great price, easy installed all items

Cons: None

Other Thoughts: would be nice to have better dust covers, Side panel damaged (scratched) in box, cooler master sent replacement promptly

Did you find this review helpful? Yes No

  • Anonymous
  • 10/4/2014 9:57:59 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: Great case!!! Especially for the price. With water cooling options, 4 options for 80-120mm fans, and a cool sleek design, it's a great case.

Cons: None so far.

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  • Eric L.
  • 9/4/2014 3:25:14 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat Budget Case

Pros: Low price tag
A lot of fan mounts, support for 80mm-120mm (come with one 120mm fan that is pretty quiet)
All black screws (more then enough to get everything mounted)
X-Dock (hot swap sata)
USB 3.0

Cons: None

Other Thoughts: Tool-less drive mount. It's a PRO if you want them/need them, but in IMO they don't add much value (I would have liked to have an extra PWM fan instead).

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  • James G.
  • 9/1/2014 8:04:50 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggs

Pros: Good size and layout, bot built like a brick but a good balance of sturdy & lightweight.

Cons: The supplied front fan cable is really too short to connect to most motherboards - only about 12 inches and since my motherboard fan connectors are top-center and rear-center I can't connect to the motherboard without using an extension. As well, the fan is a 3-pin, so I am unable to take advantage of PWM control anyway. Going to have another "spare part" now...

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  • Ronald S.
  • 8/4/2014 12:07:09 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsGreat inexpensive case

Pros: Price and build quality are great. The Hot swap bay for 3.5 inch drives is a definite plus for me. You can use an adapter and hot swap 2.5 inch drives as well. I used it as an inexpensive replacement case for an HP desktop that I wanted to make look nice and new. The window side panel is exactly what I wanted to show off the guts of my machine.

Cons: Cable management would have been a great feature but there is still plenty of room to tuck the extra wiring out of the way.

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  • Peter K.
  • 7/29/2014 12:05:33 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

1 out of 5 eggsDont get this case

Pros: Nice looking, easily opened, side panel

Cons: Expands, came scratched, heat broke back of it.

Other Thoughts: I purchased this case through cyberpower, it came damaged with expensive parts inside, 2 of 7 coolermaster fans were not spinning, cooler master is highly rated but this case is not what i expected. Will not buy again.

Manufacturer Response:

Hello Andrew,

We offer a two year warranty on our cases. We have a warrantied part request system that allows you to order parts that you may need to replace. In regards to things being damaged on the case, that is something you would most likely want to talk to Cyberpower about as to why the case came that way since they are the ones that built the PC. If you would like to discuss this issue further, you can reach me at

Please see the attached part request link if you would like to request parts.


0 out of 3 people found this review helpful. Did you? Yes No

  • Eric C.
  • 7/25/2014 5:43:11 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsCooler Master ELite 431 Plus - Solid Case

Pros: The case looks amazing and does a good job at looking great without being tacky like some cases. The case fan is the perfect brightness, easily seen but not distracting. There is tons of room to mount drives and the tool-less design works very well.

Cons: The cable management is nonexistent which is the biggest criticism I have with this case. The case is also rather light which some may view as a con.

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