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Item#: N82E16811119225

Cooler Master HAF X - High Air Flow Full Tower Computer Case with Windowed Side Panel and USB 3.0 Ports

  • Black
  • Steel / Plastic
  • USB 3.0 x 2 ,USB 2.0 x 2, Audio x 1, Mic x 1, e-SATA x 1, 1394a x 1 Front Ports
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Cooler Master HAF X Full Tower Chassis

The case that is held up as the benchmark for full towers, HAF X has remained the flagship of the highly popular High Air Flow Series (HAF). Its rugged militaristic design offers a tough casing that provides outstanding protection while providing an unprecedented ease of use when it comes to building and managing a complex and powerful system. This extends to support for the latest graphics cards and components.

The HAF X can handle up to four full length graphics cards.
Using micromesh filters located in the front bezel, top exhausts, side panel, and bottom floor, the HAF X is resistant to dust buildup.
A high airflow design strives to eliminate overheating with Large 200 and 230mm fans that spin at lower RPMs to ensure high Airflow without high noise.
There are two X-Dock bays at the front that are compatible with up to two 3.5” or 2.5” drives.
Two front ports are USB 3.0 and compatible with SuperSpeed USB. The HAF X ports are backwards compatible with USB 2.0.

Technical Specs:

Available Color Black
Materials: Case body: Steel
Front and Top Mesh: Plastic
Dimensions (W/H/D) 9.1(W) x 21.7(H) x 23.2(D) inch
Weight 31.6 lbs
M/B Type Micro-ATX, ATX, E-ATX, XL-ATX
5.25" Drive Bay 6
3.5" Drive Bay 5 hidden
2.5"/3.5" Drive Bay 2 (converted from 5.25" drive bay)
I/O Panel USB 3.0 x 2 (Internal)
USB 2.0 x 2
Audio x 1
Mic x 1
e-SATA x 1
1394a x 1
Expansion Slots 9
Cooling System Front: 230 x 30mm red LED fan, 700RPM, 19dBA / 110CFM
Top: 200mm x 30mm fan x 2, 700RPM, 19dBA, 110CFM (one optional)
Rear: 140 x 25mm Fan x 1, 1000RPM, 19dBA, 61CFM
VGA Fan Duct: 120 x 25mm or 120 x 38mm fan x 1 (optional)
VGA Holder: 80 x 15mm fan x 1 (optional)
Power Supply Bottom mounted / ATX PS2
Water Cooling Compatibility Top: 360mm Radiator (3 x 120mm fan)


  • newegg SATA Dock The Cooler Master RC-942-KKN1 features SATA dock to provide easy installation without removing side panel.
  • newegg USB 3.0 on Front I/O Panel The convenient front I/O panel enables easy access to two USB 3.0 ports, two USB 2.0 ports, one eSATA port, one IEEE 1394 port and two audio ports.
  • newegg Supreme Expandability Boasting six 5.25" external drive bays, and five 3.5” drive bays, the Cooler Master RC-942-KKN1 case provides great expandability for future upgrade. And the nine expansion slot supports 3-way and 4-way SLI, and Quad CrossFireX, perfect for hard-core game enthusiast.
  • newegg Peerless Cooling Performance The Cooler Master RC-942-KKN1 case features one 230mm front red LED on/off fan, one 140mm rear fan, one 200mm top and one 200mm side fan, as well as the air duct for exceptional cooling performance.
  • newegg Transparent Side Panel Window The Cooler Master RC-942-KKN1 case features a transparent side panel window to provide a direct view of the inner system. The red LEDs add stylishness and eye-catching fun.
  • newegg Cable Management The Cooler Master RC-942-KKN1 features a cable management system with rubber grommets for better, easier cable routing and neatness. Not only will your case look neat, but air will have no problem getting to the common hot spots.

Learn more about the Cooler Master RC-942-KKN1

Quick Info


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

Customer Reviews of the Cooler Master RC-942-KKN1

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  • Konstantin S.
  • 1/23/2015 8:58:19 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsReal Estate King

Pros: I've been building PCs for very long time and always Real Estate is a problem. When case is big enough it almost looks like they just got a bigger box without anything useful addons or usage of that space. HAF X is an amazing case there are hundreds reviews out there so I'll just be quick with my 2 cents. Amazing design for SDDs and HDDs, Fans are good quality right out of the box with one little note to that. Unfortunately they are not 4 Pin and after running bench speed test on fans I realized that fans have almost 1 speed. In reality it's not but by looking at RPM I can tell you that at 20% speed is almost identical as at 100% May be 5% increase in speed. I'd love to have fans with discrete and smooth RPM control so motherboard can get real 20% speed when you want silence and 100% when you blasting. So for fans I have to say that indeed they are great fans but for my like I'd change all of them for 4PIN and let motherboard control speed automatically. Be advised if you change fan front on / off light and button will not work so if you want light in the front get a fan with light always on or controlled otherwise. Basically this case will make you one happy builder. Enough space for pretty much anything you want.

Cons: I see some "ana*" stuff like dust grabber cleaning and some other things like right side door pushed in metal should be side to side, may be cpu access opening should be bigger or at light a bit to the left. But again this is small things and no matter for most people.

Other Thoughts: Just get it , you'll love it. Get all in one Liquid Cooler for CPU and mount it on the top, 220 or 240 will do just fine.

Did you find this review helpful? Yes No

  • Adam F.
  • 1/14/2015 4:40:16 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsVery big case

Pros: This was my first build, so I wanted something pretty big to work around, and get used to. It fit the bill, plenty of wiggle room for drives, card and fans. I like the top panel power switch, but the cover for it is pretty hard to slide. Would be nice if it had something to grab hold of to help slide.

Cons: Every now and then, when I go to plug a usb device into the top usb port, it sounds like it sparks, and the computer restarts. Others times, when I touch my light switch in my room, in the winter, it restarts. I think they are both related, as I've read the forums about this particular problem.

Other Thoughts: Great case, a little heavy, red led front fan is nice, plenty of features, but shorts out occasionally.

Did you find this review helpful? Yes No

  • C W.
  • 1/10/2015 3:21:47 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsbig, but great!

Pros: This case is great! Awesome air flow. Temps stay really cool with the big air fan I was able to put in.

Cons: big. but still fits under the desk!

Did you find this review helpful? Yes No

  • Anonymous
  • 1/9/2015 6:36:02 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year

4 out of 5 eggsAmazing Case for Gamers/Enthusiasts

Pros: -Hardcore, industrial look
-Plenty of space to put whatever you want in it
-Great cable management options

Cons: -One of the cable grommets ripped and a rubber flap came off, losing some of the aesthetic appeal
-HEAVY, (but I expected that)

1 out of 1 people found this review helpful. Did you? Yes No

  • Brian C.
  • 12/28/2014 12:09:26 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

5 out of 5 eggsBest case/tower

Pros: This case is a beast. I decided to go with this computer tower for standard ATX (it also works for pretty much every other form factor) for high air flow, maximum cooling, and plenty of space. This is a great case, plenty of fans, very good airflow, very spacious. Very easy to install components and plenty of spots within the case to thread wires and cords. It also has a nice SSD bay!

Cons: The side fan on the left side of the case is a bit unnerving right next to where the video card usually goes, but a good wiring job with zip ties leaves no worries.

Other Thoughts: I will be using this case for quite a long time as I upgrade pc components as needed.

0 out of 1 people found this review helpful. Did you? Yes No

  • Michael M.
  • 12/26/2014 11:27:06 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Case

Pros: Its a very nice case. I really like how the back panel pops out so it gives more room for cable management. The case can fit just about anything you want to put in it. Also the 2 fans it came with are nice enough to keep but I think I'm going to change them out just for aesthetic purposes.

Cons: If I had to say cons the price is a bit high but you get what you pay for. Another thing is when you take off the top of the case to add another 200mm fan the front panel cables are a bit tight. The Ground wire can screw off easily but its hard to put the fan in and get the cables happy so you can fit the cover back on.

Other Thoughts: Overall I would buy again.

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  • Tyler T.
  • 12/16/2014 9:46:04 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsKeeps Cool, But...

Pros: Keeps the hardware very cool
Very Big

Cons: Gets dirty quick
Very Big
Front bottom fan broke within a month

Other Thoughts: Overall a good case however be ready to clean the dust out often. This happens due to the amount of fan activity, trade off it keeps the hardware cool.

Did you find this review helpful? Yes No

  • 12/13/2014 11:13:43 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsBroken during setup

Pros: 1. Roomy. Needed it for my new 970 card.
2. Big, low RPM fans that keep it cool and quiet.
3. LEDs in case. Nice touch.
4. Wheels on the bottom! Nice!

Cons: 1. My major gripe: The plastic frame to the right of the power button on the front, top of the case broke during installation as I was trying to manhandle this massive case around. I'm shocked that a 180 dollar case is made of such flimsy materials. Watch yourself while fitting this case.
2. The front fan and the hard-drive slots are a pain. You have to take the back panel off (which is easy enough in itself, thank goodness) in order to route the cables. The hard-drive bays themselves also appear to be the same flimsy material on top of the case. I didn't break one, but be careful.

Can't be helped: The placement of fan power cords weren't very friendly with my GIGABYTE P67A-UD4-B3. I had to hook them directly into the power supply, but I managed.

Did you find this review helpful? Yes No

  • Fletcher S.
  • 12/9/2014 7:28:34 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

3 out of 5 eggsBuild quality could be better

Pros: Cheapish price for a high end case, decent room.

Cons: Cheap build quality, very poor.

Other Thoughts: Do yourself a favor and buy a quality case, I bought a Cosmos II for my other build and the quality was sooooo much better.

Did you find this review helpful? Yes No

  • Jaimie K.
  • 12/3/2014 3:21:46 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsGood Product, ehh on the company

Pros: Great case, works as expected although connector to 1 fan does not work

Cons: bought this because it was a deal with the rebate. Submitted my rebate on time per their deadline, received tracking 23618229, website said it was mailed out to me, waited 3 months, and it never showed up. After calling customer service to have it resent, they said that my mailing wasnt postmarked by the due date....weird because I work at USPS and I personally dropped the letter off myself before the cutoff date. The funny part is the lady then tells me "oh ya this happens quite a bit. Even if you drop the mail off on time, if it ends up sitting on someones desks for days or the post office messes up something on their end, then you're out of luck i'm sorry". Insane for a customer to drop off the required info on time and then be out of his/her rebate do to no fault of their own. Probably wont shop cooler master again, could have gotten a deal on something else without a 3 month hassle.

Manufacturer Response:

Good Afternoon Jaimie,

I apologize you're having issues with your fan as we can replace that through our CM Fanzone Parts Request under warranty with link below. In regards to your rebate, it looks as if this is an offer through New Egg and a Third Party provider as our main offices do not process this. You can get more information regarding your rebate through who can further assist you.

If you would like to discuss our product then you can contact us through Live Chat, Support Ticket, and phone.

Felinni M.
CMUSA Support

0 out of 1 people found this review helpful. Did you? Yes No

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Item#: N82E16811119225
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