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Cooler Master HAF XB RC-902XB-KKN1 ATX Computer Case Black *No PSU*

Cooler Master HAF XB RC-902XB-KKN1 ATX Computer Case Black *No PSU* - 1
Actual product may not be exactly as shown.
Cooler Master HAF XB RC-902XB-KKN1 ATX Computer Case Black *No PSU* - 77936_l.jpg Cooler Master HAF XB RC-902XB-KKN1 ATX Computer Case Black *No PSU* - 77936_1.jpg Cooler Master HAF XB RC-902XB-KKN1 ATX Computer Case Black *No PSU* - 77936_2.jpg Cooler Master HAF XB RC-902XB-KKN1 ATX Computer Case Black *No PSU* - 77936_3.jpg Cooler Master HAF XB RC-902XB-KKN1 ATX Computer Case Black *No PSU* - 77936_4.jpg Customer Photos (0)
Reg. Price: $99.99  CAD
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$75.82 CAD 
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Part #: RC-902XB-KKN1

SKU: 77936
Shipping Weight: 22.8 lbs

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Product Videos [ Edit ]

Features [ Edit | History ]


The Cooler Master HAF XB takes the famous High Air Flow series to a revolutionary new form factor with extreme cooling performance. The removable horizontal mainboard tray and large mesh top and front panels with two 120mm front fans create a powerful front to back airflow. Despite its compact rugged design, there is plenty of space for even the tallest high performance tower heatsinks, thick watercooling radiators and up to 3 of the longest high end graphics cards. Within seconds the side panels with their rigid carry handles and the top mesh panel can be removed, transforming the HAF XB into a Test bench with direct access to the hardware. The front panel features two USB 3.0 super speed ports as well as 2 SSD compatible X-dock slots for lightning fast data transfers.

Quick Specs:
Material Steel Plastic
Motherboard Supported ATX µATX Mini ITX
Limited Warranty 2 Year
Weight (Approximate) 18.10 lb
Color Black
Form Factor Cube
Cooler Type Liquid Cooler
Height 13"
Width 17.4"
Depth 16.7"
Number of Fans Supported 6
Number of Fans Installed 2
Number of External 3.5" Bays 2
Number of External 5.25" Bays 2
Number of Power Supplies Supported 1
Number of Power Supplies Installed No
Number of Internal 2.5" Bays 4
Number of Total Expansion Bays 8
Number of Total Expansion Slots 7
Total Number of USB Ports 2
Total Number of Audio Out Ports 1

Specifications [ Edit | History ]

     Number of External 3.5" Bays: 2
     Number of External 5.25" Bays: 2
     Number of Internal 2.5" Bays: 4
     Number of Total Expansion Bays: 8
General Information  
     Brand Name: Cooler Master
     Manufacturer: Cooler Master Co., Ltd
     Manufacturer Part Number: RC-902XB-KKN1
     Manufacturer Website Address:
     Product Line: HAF XB
     Product Model: RC-902XB-KKN1
     Product Name: HAF XB
     Product Type: Computer Case
I/O Expansions  
     Number of Total Expansion Slots: 7
     Front Audio In: Yes
     Front Audio Out: Yes
     Front USB: Yes
     Total Number of Audio Out Ports: 1
     Total Number of USB Ports: 2
Physical Characteristics  
     Color: Black
     Cooler Type: Liquid Cooler
     Depth: 16.7" (424.2 mm)
     Form Factor: Cube
     Height: 13" (330.2 mm)
     Material: Steel
     Weight (Approximate): 8.21 kg
     Width: 17.4" (442 mm)
Power Description  
     Number of Power Supplies Installed: No
     Number of Power Supplies Supported: 1
Technical Information  
     Motherboard Supported: ATX
Mini ITX
     Number of Fans Installed: 2
     Number of Fans Supported: 6
     Limited Warranty: 2 Year

Customer Reviews of COOLERMASTER RC-902XB-KKN1

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding COOLERMASTER RC-902XB-KKN1 reviews.
Experience: 9 Months


Good looking case
Got this for almost 1year and still great

Experience: 2 Weeks


Good Airflow
High quality product
Great cable management
Depending on your fan configuration, hard to keep all the dust out.
This is a very unique case, I couldn't find anything quite like it with a horizontal motherboard. It is a very rigid build, the handles are very well designed so carrying this thing around is a breeze. All your cables can be perfectly hidden underneath the motherboard where all your drives and power supply are stored. The case comes with two front 120mm intake fans which arent too loud, and are quiet enough at low speeds. They move enough air to cool your board and graphics card without needing a top fan. I have a 120mm all-in-one CPU water cooler that serves as my exhaust on the case and it keeps most of the hot air out. The only drawback is the because the side panels have open vents without dust screens, it is possible your rear 120mm exhaust will pull unfiltered air in. Not a big deal, but for me I like to keep things as clean and dust free as possible.

This case is highly mod friendly! Just google the HAF XB 'Green Machine' and you will see what this case is capable of.

Experience: 2 Weeks


Easy cable management, Extremely easy installation of HDDs and SSDs, Very easy removable tray for Motherboard, "X-Drive" for HDDs, Easy HDD removal, Snap in DVD drive installation, Sturdy construction
Very loud fans, Motherboard tray removal requires all devices to be detached and pushed aside, a bit larger then expected, reboot required when installing new HDDs with "X-Drive"
Loving this case. Super easy to install HDDs and SSDs (with provided plastic parts), DVD drives snap into place and stay with no issues, cables are hidden well, amazing ventilation, water cooling unit fits with no issues, removable motherboard tray is easy to take out (provided all other cables are disconnected and pushed aside), easy to carry (handles are firm and sturdy), The "X-Drive" daughter board for HDDs is a great addition and makes removal really simple, but a reboot is needed for win7 to detect new drives, a bit loud due to fans but well worth it, loads of internal space, the doors (top, left, right) all fit in like a glove (no fuss), would recommend to anyone thinking of a good LAN case or just a change from the standard.

steven s wilson
Experience: 3 Weeks


Unique, water cooling friendly, great cable management potential, excellent cooling potential.
Cramped working conditions when Motherboard Tray is installed. 200mm fan mounts non-standard.
Just finished doing a 1/2" tubing / 2 bay Res / GPU + CPU loop in one of these and while it was a bit tight getting it in at times, a custom loop is certainly a viable option. (Build Log on HWC if anybody is interested).

Cable management of non-modular PSUs is a breeze in the lower compartment, and CoolerMaster has done everything in their power to make it easy to route cables from the lower compartment directly to the closest edge of the MB connector you're accessing in the upper compartment.

As far as build quality goes, I was quite surprised at how good it is for a $100 case. Sure there's a lot plastic on the front, but aside from that the panels all fit tightly, internal cutouts are folded over to prevent sharp edges, and the 4 post cube design makes for a sturdy case.

My only real complaint is on the spacing of the mounts for the optional 200mm fan. The mounts on the HAF XB are rectangular (18 X 11cm) while the industry seems to have settled on a 15.5cm square mount. If you are looking for a compatible fan, take a peek at the mounts on the bitfenix spectre pro line in order to get an idea of what you'll need.

As far as changes go, the only thing off the top of my head that I'd like to see as an improvement would be the inclusion of a couple of USB 2.0 ports to compliment the current 3.0 ports. 2 ports doesn't feel like enough to start with and the fact that win7 will not recognize the front 3.0 ports until drivers are installed means that you'll have to use rear MB USB ports if you want to install the OS with a USB ODD drive.

Carbon Rod
Experience: 7 Days


Lots of room. Straight forward airflow. Lots of tie down locations for cable management.
There's only a couple things that peeve me about this case. The first is the power supply mount extender. If they had made the case 1 inch longer, there would be no need for the little extender that is required to mount the power supply. The other thing that peeves me is that if you want to mount a 200mm fan on the top grill, you almost HAVE TO use a Coolermaster fan.
I started using this for a multi-GPU rig (used for Folding at Home) because the airflow is extremely straight forward. Air comes in the front, doesn't have any obstructions like hard drive bays or anything else and can flow straight to the installed GPUs. Helps keep the temps down. Hot exhaust air travels straight up out the top of the case.
This is a rather cool and functional alternative to test benches for those of you who might run multi-GPU rigs for various distributed computing applications like Folding at Home or even Bitcoin or Litecoin mining.

This review was modfied by poster @ 07-07-13 02:42 PM

Experience: 1 Days


Great case, lots of room to work with.
only 2 x 3.5 in hard drive bay
Bought this case and there is lots of rooms to work also this is a great case for cable managing.

easy to build a computer.

there is only 2 X 3.5in HDD bay but I bought a 5.25in bracket to put my additional HDD into the 5.25in bay.

Experience: 3 Days


SSD Bays + Mounting Kits Included, Great Air Flow, Tooless Design
Front USB 3.0 connection did not fit my board, SATA connections break too easily due to poor design, limited to 2-3 graphics cards depending on your motherboard, power supply choice is critical as there is limited space.
I typed up a nice detailed review but it was lost after submitting because my order ID was invalid. See I used my Invoice ID, because I don't have an Order ID.


DO NOT BUY THIS if you're going to use more then 2 Graphics Cards, 3 Max! (And that depends on your choice of motherboard!)

Also you'll need a Hot Glue Gun as the SATA connections on the removable bays will crumble at the slightest touch (ok so not really but you'll see how terrible they are) :P

SuPa DoNkEy
Experience: 2 Weeks


Unique design
Good price
Weak mobo tray
Relatively tight space
Quality could been bit better
Overall, I am happy with this case compared to Corsair 200R. Qualty of the case could been little bit better. Screw sets quality should be better as well. Also I was not able to fit Fractual 140mm fans in front of the case.

Experience: 7 Days


Easy cable management
Plenty of airflow
Fits double radiator
Hard drive hot swap bays
Front mesh not removable
Optical drive feels a bit loose when installed
This is a great case to work with, easy to run all the cables and then drop  the motherboard tray in. Plenty of ventilation so high power fans aren't needed for good cooling.

The hard drive bays are nice, it takes about 10 seconds to pop one in from the front. It doesn't come with a rear fan, I installed 500 rpm scythe slipstreams in mine which are less noisy.

My Hyper 212 fits with some room to spare most tower heatsinks should be fine for clearance with this case.

The only real negatives I can think of is the front mesh is not removable, to clean it properly requires removing the side panels and releasing plastic tabs on the inside of the case, eventually those tabs could break off. Also the optical drive retention doesn't lock the drive down very tight so it could rattle a bit when the drives spinning up.

Experience: 2 Weeks


Very functional, looks great, easy assembly
Comes with cheap 120mm fans, I suggest you upgrade.
Pretty tight in the bottom behind the psu.
No rubber grommets for the watercooling hole cut-outs.
Amazing case, great price, you can't go wrong.

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Messages about Cooler Master HAF XB RC-902XB-KKN1 ATX Computer Case Black *No PSU*

Rollable on Carpet? (Randal_S- Sep 19, 13, 7 Replies)
Front Mesh (Chris_W- May 19, 13, 6 Replies)
Rebate Date Range incorrect? (David_C- May 16, 13, 5 Replies)
Compatible Power Supply (Chris_W- Feb 24, 13, 8 Replies)
Carryon (Eric_T- Feb 21, 13, 2 Replies)

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Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.

Reviews from the Web

Below are reviews found on other web sites for this product submitted by customers.

Posted by: werty316 @04/01/13
Posted by: werty316 @03/05/13
Comment: Overall, Cooler Master included everything that really matters whether you need a tech station or a LAN party friendly system.
Posted by: Futurelooks Guy @02/22/13
Posted by: werty316 @02/06/13
Posted by: CounterSnipe @11/19/12
Posted by: CounterSnipe @11/19/12
Posted by: CounterSnipe @11/19/12
Posted by: CounterSnipe @11/19/12
Posted by: CounterSnipe @11/19/12
Posted by: TheBigTroll @11/19/12
Submit a review link   |   Latest 30 reviews

Product Warranty

NCIX provides limited warranty for this product for 30 days after purchase.

Support For USA, Canada, & Mexico 
Cooler Master USA
4820 Schaefer Ave.
Chino, CA 91710

Phone: 1-909-673-9880
Fax:  1-909-673-9882 or 9883

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While uses all reasonable efforts to include accurate and up-to-date information on the Site, makes no warranties or representations as to the Site's accuracy. assumes no liability or responsibility for any errors or omissions in the content on the Site. warrants product(s) to be in good working condition and free from defects in material and workmanship for a period of one (1) year for OEM packages, and for thirty (30) days for RETAIL packages (excluding laptops and notebooks), from the original Invoice date unless otherwise restricted below or by the manufacturer's own warranty policy. Defective returns and warranty service will be replaced, exchanged or repaired at's sole discretion, and based on vendor's policy.

NON-DEFECTIVE merchandise returns may be accepted on some items ONLY within 15 days of the Invoice date, at's discretion. Laptops and Notebooks can be returned within SEVEN (7) days from original invoice date. Return will only be accepted with original packaging, accessories, cables, free gifts (if applicable), unopened software and manuals and is subject to inspection before warranty approval. Laptop and notebook with tampered serial numbers or UPC code will be denied returns.

GOVERNMENT & BUSINESS Laptop and Notebook purchases made with government or business POs can be returned typically within fourteen (14) days from original invoice date. Return will only be accepted with original packaging, accessories, cables, free gifts (if applicable), unopened software and manuals and is subject to inspection before warranty approval. Laptop and notebook with tampered serial numbers or UPC code will be denied returns. Please check with your B2B sales representative for specific terms and details.

All NON-DEFECTIVE returns are subject to a 15% restocking fee. No refunds will be issued for blank media, digital camera (and accessories), opened software, printers, printer supplies, paper, projectors (and accessories), appliances, handhelds, PDAs, notebook computers, special order computers and special order items.

Defective software, video games or DVDs will be replaced by the SAME title and format ONLY (and subject to current availability) within 30 days of the Invoice date. Software, Drones, video games and DVDs may be returned within 30 days only if the item is UNOPENED (with shrink wrap still intact) at the sole discretion of does NOT apply a surcharge to credit card orders. Please read our RMA & warranty policy and terms & conditions for more information. If you have any questions regarding our sales and warranty policies, please send us a message -- we'll be glad to answer any of your questions.

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