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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 1612 Reviews

    See all reviews

    • Filter Results
    • (1434)
    • (1)
    • (56)
    • (1)
    • Brynn H.
    • Verified Owner

    4 out of 5 eggs Excellent Airflow

    Pros: -Average price
    -Can support just about any kind of setup
    -Stock 120mm fans are good
    -Side fan support
    -Front panel interface cables are relatively easy to disconnect for better cable management if you don't care for the AC97 audio connector, or USB 2.0.

    Cons: -Does not support H100i without modification

    Bottom Line: Recommend 200mm fan from Cooler Master to replace the front 120mm.

    Did you find this review helpful? Yes No

    • William S.
    • Verified Owner

    5 out of 5 eggs Wow, I like it so far

    Pros: Easy to set up. Great design. Has some sharp edges, but expected for a lower end case.

    Cons: Can't find any so far. Lack of documentation. (was there supposed to be any?)

    Bottom Line: Installed 3 extra fans while rebuilding system bringing it to a total of 5. Came to me in the 4 days out of 4-7.

    Did you find this review helpful? Yes No

    • Allen W.
    • Verified Owner

    3 out of 5 eggs Looks good but...

    Pros: Looks good
    Very big
    Seems to have good ventilation

    Cons: The plastic part on the front panel was broken upon arrival

    Bottom Line: Looks like a good case but the front panel plastic was broken when i opened the box.

    Did you find this review helpful? Yes No

    • Josh C.
    • Verified Owner

    4 out of 5 eggs Great Case

    Pros: I love this case. It has plenty of air flow and two large 120mm fans. I love the fact you can move the drive bays around and it came with way more options than I expected. I missed the fact that it had 2 120mm fans. It has plenty of spaces for ssd and standard 3.5 hard drives. Great over all mid tower case. Lots of room between front drive cage and full size atx board for power cables. Plus the dust filter is plastic and not foam. So if I ever have to clean the case out. I won't have to worry about foam going all over the place.

    Cons: The front fan cable was a tad to short. Even if my motherboard had a on-board three pin fan connecter towards the front of the case. The 3 fan cable connector would not reach. On the plus side this case came with adapters for the 5.25 power connectors so I used that instead for the front case fan.

    Bottom Line: None

    Did you find this review helpful? Yes No

    • Anonymous
    • Verified Owner

    4 out of 5 eggs Great looking case!

    Pros: • Very good looking, looks rugged
    • PLENTY of expansion capabilities
    • Plenty of space
    • Amazing cooling potential
    • Seems very high quality and tough
    • Power button is fun to push!
    • Nice cable management
    • Looks sick with red LED fans

    Cons: • Some sharp edges, I cut my hand a couple of times
    • Would be nice to have rubber boots in the cable management holes
    • Would look even better if inside was painted
    • Stock air filters aren't the best and dust gets in through the top (no air filters there) unless you have fans there

    Bottom Line: This case looks great sitting beside my desk! I love the look! It is big, so if you are looking for a small to moderate size case this isn't for you. This case offers plenty of options and will fit pretty much anything you want to put in it. Plenty of 2.5/3.5/5.25" slots and amazing cooling. I would definitely buy this again!

    Did you find this review helpful? Yes No

    • Johnathan A.
    • Verified Owner

    2 out of 5 eggs

    Pros: Great case. Good for cooling.

    Cons: The front USB Ports stopped working, and they started giving me BLUE SCREEN OF DEATH (BSOD). This happened about a week after owning the thing. Unfortunately, I still have this case. I can't plug the front ports into the mother board though. I can only use the ports on my motherboard, not the actual front case. It stinks. I wish they would have sent me a replacement...

    Manufacturer Responses:

    Good Afternoon Johnathan, I apologize the USB is not working correctly as you can apply for a Parts Request through our CM Fanzone at the links below. Please let me know for further questions. Regards, Felinni M. CMUSA Support

    Did you find this review helpful? Yes No

    • Tien D.
    • Verified Owner

    5 out of 5 eggs outstanding

    Pros: Everything is what I expected. Comes with 2 extra case fans and very huge. I'm loving it

    Cons: Nothing. It's really huge.

    Did you find this review helpful? Yes No

    • Jay R.

    5 out of 5 eggs Great Case for the Price

    Pros: - Sturdy / Good build quality
    - Nice looking
    - Cheap : good value
    - Nice Airflow
    - Lots of room inside

    Cons: - Non painted interior

    Bottom Line: PS: I dont know why it says $130 bucks,.
    But this was priced around 60 ?

    Did you find this review helpful? Yes No

    • Nathan A.
    • Verified Owner

    3 out of 5 eggs Decent Case, does not work with H100i

    Pros: Decent case for the money. Not as nice as my old HAF full-tower case, but seems sturdy and had plenty of room for all the parts, except....

    Cons: The Corsair H100i Liquid Cooling system is too big to mount to the inside of the case without hitting the motherboard.

    Case instructions recommend mounting it to the outside of the case, but then you'd have to disconnect the hoses to thread them back through to the case interior, which defeats the whole purpose of a pre-built liquid cooling system.

    I was able to get it to work by mounting the H100i radiator block on the inside of the case, then mounting the two fans on the outside, using long screws to reach and hold the two together. I them dremeled out part of the grate to make room for the fan power cables to slip back through.

    It works, but had I known about this incompatibility, I would have picked another case for my build.

    Did you find this review helpful? Yes No

    • Luciano J.
    • Verified Owner

    5 out of 5 eggs Great

    Pros: Lots of Space. it is very efficient

    Cons: None with me

    Did you find this review helpful? Yes No