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COOLER MASTER HAF series RC-912-KKN1 Black SECC/ ABS Plastic ATX Mid Tower Computer Case

Item #: 9B-11-119-233  |  Mfr. Part #: RC-912-KKN1  |  UNSPSC: 43201601
$69.99 Save: $10.00 (14%)
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    Top Favorable Review

    Great case for my first build

    -well written/drawn instructions -lots of space -well build -easy to disassemble -super bada** looking -can fit about a bajillion and five hard drives if that's your thing. -good airflow (enough for me), especially with all my fans. Read more
    — Linda S. 2/10/2011

    Top Critical Review

    Color Blind Manufacturer

    The person that assembled thias must have been color blind. I spent the better part of 3 hours trying to figure out why only the "reset" LED would come on when I plugged it in. I took the face off the front of the case, this after trying several ... Read more
    — Charles W. 12/24/2011

    Quick Info


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

    Cooler Master HAF 912 Mid Tower Chassis

    Cooler Master’s HAF 912 further enriches the HAF series by adding a compact, yet fully featured mid-tower solution for enthusiasts and budget conscious gamers alike. Its seemingly small exterior supports a plethora of interior features such as twelve devices and high end GPU cards.

    The HAF 912 embodies the rugged aesthetic and qualities of its brethren while remaining attractively priced. Its traits more closely resemble that of a mid to high-end case than that of other cases in its price range. The HAF 912 pays tribute to the legacy of HAF 932 & HAF 922 in ease of installation, high airflow, and compatibility with water cooling hardware.

    HAF 912 is the most compact solution in the HAF Series that still provides full desktop tower component support.
    The HDD cage can be easily removed to accommodate long high-end graphics cards. Rotate the cage 90 degrees to adjust your system airflow and cable management setup as you need.

    Technical Specs:

    Model RC-912-KKN1
    Color Black
    Dimension 230 x 480 x 496 mm / 9.1 x 18.9 x 19.5 inches
    Weight 17.8 lbs
    Material SECC / ABS Plastic
    M/B Type ATX / MATX
    5.25" Drive Bay 4 Exposed
    3.5" Drive Bay 1 Exposed (converted from 5.25" bay) 6 hidden
    2.5" Drive Bay 2+2 (converted from 5.25" bay) 4 hidden
    I/O Panel USB 2.0 x 2, Audio x 1, Speaker x 1
    Cooling System Front: 120 mm fan x 2, 1200 RPM, 17 dBA(one is optional,can be swapped for one 200mm fan)

    Top: 120 mm fan x 2 or 200mm fan x 1(optional)

    Rear: 120 mm fan x 1, 1200 RPM, 17 dBA

    Side: 120/140 mm fan x 1 (optional)
    Expansion Slots 7+1
    Power Supply ATX PS2 / EPS 12V (optional)
    Warranty 2 Years
    UPC Code 884102009877


    • newegg Superior Expandability and Expansive Space The Cooler Master HAF 912 boasts 4 exposed 5.25", 1 exposed (converted from 5.25" bay) and 6 hidden 3.5", 2+2 2.5" / 1.8" HDD/SSDs drive bays (via the 3.5’’ to 2.5’’ adapter) as well as 7+1 PCI expansion slots for increased expandability. 3.5’’ HDD cage can be rotated 90 degree or removed to fit long graphics cards. The bottom mounted 2.5-inch drive cage can also be mounted on top of the bottom half of the 3.5-inch drive cage if more room is needed at the bottom of the case.
    • newegg Excellent Cooling Solution – 200mm Megaflow Fans and Water Cooling Support The Cooler Master HAF 912 features one front and one rear 120mm fans and support another front 120mm (two front fans can be swapped for one 200 mm fan), one side 120/140mm and two top 120mm ( or one top 200mm ) fans for peerless air cooling performance. The HAF 912 also has pre-drilled outlets and retaining holes, and accepts two external radiator 120mm fans for building water cooling system.
    • newegg Flexible Cable Management The 16mm width between side panel and motherboard tray provides sufficient space for hiding cables. HDD cages with holes allow easy cable routing while modular notches tie cables neatly, leading to better internal airflow.
    • newegg CPU Retaining Hole and Removable Dust Filters CPU retaining hole allows easy heatsink installation and removal. The dust filters on the bottom and front cover block dust outside of the enclosure and is removable for easy cleaning.
    • newegg Support for Long Graphics Card The Cooler Master HAF 912 supports high-end graphics cards like ATI HD 5970 and NVIDIA GeForce GTX480 after the removal of the 3.5’’ HDD cage.
    • newegg Convenient Front I/O Panel and Top Platform Convenient front I/O panel offers easy access to two USB 2.0 and two audio ports. Top platform provides room for your personal belongings, like your cellphone or keys.


    Learn more about the Cooler Master RC-912-KKN1

    Customer Reviews of the Cooler Master RC-912-KKN1

    Do you own this product? WRITE A REVIEW

    5 out of 5 eggs Based on 1601 Reviews

    See all reviews

    • Filter Results
    • (1424)
    • (1)
    • (54)
    • (1)
    • ALEKSEY K.
    • Verified Owner

    5 out of 5 eggs Love it

    Pros: Great for the price, good air flow, fast access if you need it.

    Cons: none

    Did you find this review helpful? Yes No

    • Anonymous

    5 out of 5 eggs Great case for my first build

    Pros: decent size case, good airflow, nice case for a first-time builder.

    Cons: One of the usbs on the front stopped working after about 6 weeks and I kinda wish the inside was painted. other than those minor things, I'm content with it.

    Did you find this review helpful? Yes No

    • Jose R.
    • Verified Owner

    4 out of 5 eggs Solid starter case

    Pros: Good price, can fit larger GPU cards with the drive cage removed, moves buckets of air, looks ok, floor mounted 2 SSD cage and 2 HDD cage, takes optical drive with quick mount style lock.

    Cons: Not as high quality feeling as I hoped, front panel a bit of a PITA to get off (top tab is behind the upper drive cages. Very difficuly to reach without taking both sidepanels off. Wish it was a bottom release style).
    Cable management gromets would have a bit improvement to make sure you don't fray cables pulling them through. Edges are rounded off some but still worried me a bit.
    Captive case screws would have been nice.

    Bottom Line: For the money, not bad. Will fit just about any mid-range build but if you are planning watercooling and multi GPU setups, might want to look elsewhere.

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

    • Dylan G.
    • Verified Owner

    5 out of 5 eggs Great Case!

    Pros: Great Look
    Fantastic Airflow
    Sufficient Space Inside

    Cons: Is a bit on the heavy side, however, this is not a big issue.

    Bottom Line: My main concern was space, and airflow when I was looking for a case to buy. This case was able to fit my needs and went beyond. The airflow is absolutely amazing, I have no doubts in my mind about my build overheating at all. The space was pretty close to not being big enough considering I had to fit a GeForce 770 GPU in their, but it still was able to fit with a bit of space to spare.

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

    • Dean W.

    1 out of 5 eggs Terrible Fans

    Pros: Descent case.

    Cons: Problem I have.. Every single fan died within 1 year. That is absolutely ridiculous.

    Bottom Line: I dont think i would buy Anything coolermaster ever again.. Going to stick to Silvetrstone from now on

    0 out of 6 people found this review helpful. Did you? Yes No

    • Pillip K.
    • Verified Owner

    5 out of 5 eggs best case for the price

    Pros: Big, comes with fans and it looks decent.

    Cons: minor things like not painted inside and has no usb3.0 headers and such.

    Bottom Line: The cons are not even cons considering this case is only 54 dollars. USB 3.0 can be reached in the back if your mobo supports it. I don't need a painted interior either. It is super easy to install parts into. Does not have the best cable management but like I said this case is big and you can make it work.

    2 out of 2 people found this review helpful. Did you? Yes No

    • Joshua V.
    • Verified Owner

    5 out of 5 eggs Excellent case

    Pros: You get cable management, plenty of space for a video card, and a rotating HDD cage for an entry-level price. Coolermaster includes excellent documentation to help with the setup process. The aesthetics of the case are top quality.

    Cons: You really can't go wrong with this case, it is designed with gamers in mind though.

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

    • babanna s.
    • Verified Owner

    2 out of 5 eggs

    Pros: Decent airflow

    Cons: No USB 3 only USB 2

    Manufacturer Responses:

    Good Evening You can upgrade your HAF 912 with our HAF 912 USB 3.0 5.25" Bracket - OEM Package [621024410-GP] through our CM Store at the link below. You can also register your case through our CM Fanzone for some additional support such as RMA, Parts, Request, Live Chat, and Support Ticket. Please let me know for further questions. Regards, Felinni M. CMUSA Support 1-888-624-5099

    0 out of 4 people found this review helpful. Did you? Yes No

    • Amanda G.
    • Verified Owner

    5 out of 5 eggs Great case!

    Pros: Big case, Lots of airflow, looks great, lots of room, plenty of optical drive bays and hard drive bays. I have 4 hard drives in raid, still have room to slap an ssd in it if I want. Looks beefy, the 922 and 932 are too freaking huge in my opinion. They are great cases too though. I have built over a thousand custom built pc's and this is the one I personally use in my gaming computer. I bought a a big blue fan and installed it on the top of the pc. I bought 2, blue 12" cold cathode lights and it looks fantastic! Goldie locks and the three bears " Not too big, not too small, it's just right"

    Cons: No clear side panel

    Bottom Line: They may have this option, but allow a clear side panel upgrade? It's not that big of a deal though. The Half 923?

    2 out of 2 people found this review helpful. Did you? Yes No

    • Brett H.
    • Verified Owner

    3 out of 5 eggs It's an OK case

    Pros: The price. Great for a budget build!

    Cons: When I bought this back a year ago it did not come with the right motherboard screws. The standoffs needed a finer thread. I ordered some and took care of the issue. A little frustrating when you have all the components, but a simple issue henders the build process.

    Bottom Line: The cable management is a little hard, but you can achieve great wiring with a little patience. The case was used in my first build and now I'm using it again for a second build. Due to the fact I didn't have enough money to replace it, but eventually I will.

    0 out of 2 people found this review helpful. Did you? Yes No