Wireless Type | 802.11a |
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70% positive over last 12 months
Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00)
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Purchase options and add-ons
Brand | Cooler Master |
Motherboard Compatability | Micro-ATX and Mini-ITX |
Case Type | Mini-Tower |
Recommended Uses For Product | Gaming |
Color | Black |
Material | Alloy Steel, Plastic |
Power Supply Mounting Type | Bottom Mount |
Cooling Method | Fan |
Item Weight | 480 Grams |
Product Dimensions | 15.39"D x 9.06"W x 15"H |
About this item
- I/O panel can be adjusted in 6 different locations and the Case can be positioned: Vertical or horizontal
- Edge to edge acrylic transparent side panel offers a full view inside
- Body depth height: Can support normal size ATX power supply
- Front magnetic design dust filter with open perforated front, top and bottom for high air performance
- Extra space behind the motherboard tray for hidden cable management
- Motherboard Support: Micro ATX, Mini ITX, CPU Cooler: 159mm/6.2", GPU 360mm, Radiator Support Front: 120mm/240mm, Rear: 120mm
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WARNING:
From the manufacturer
Make It Yours.
We're all about the things that make building a PC such a rewarding experience. The sense of achievement. The joy of making and creating something uniquely yours in form and function and, of course, the thrill of bringing your creation to life without melting your components.
MasterBox Q300L
Choose Your Style
The MasterBox Q300L is your straightforward option in the MasterBox Q-series from Cooler Master, a series that might be small in size but excels in functionality, modularity, and thermal performance. The combination of a practical design and the unique customizable aesthetic makes the Q300L the perfect choice for office and home use.
- Magnetic Dust Filters
- 6-Orientation I/O Panel
- Edge-to-Edge Acrylic Side Panel
- Routing Space
- Thermal Performance
- ATX PSU Support
- CPU Cooler: 159mm, GPU 360mm, Radiator Support Front: 120mm/240mm, Rear: 120mm
- Motherboard Support: Micro-ATX, Mini-ITX
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Magnetic Dust FiltersThe Dust filter's special pattern gives the chassis a distinctive appearance. |
Modular I/O PanelThe I/O panel offers versatile placement in six different locations. Whether at the front, top, or bottom on both sides, you have the flexibility to adjust its position. |
Versatile CoolingStay ahead of the game with versatile mounting options. Take advantage of the opportunity to fit a liquid cooler of up to 240mm, ensuring optimal performance. |
Components ClearanceThis case supports CPU coolers with a maximum height of 159mm, graphics cards up to 360mm in length, and power supplies with a length of up to 160mm. |
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Spacious InteriorExperience a spacious interior that offers abundant room for Micro-ATX or Mini-ITX motherboards, allowing for easy installation, efficient cable management, and future expansion possibilities |
Open Thermal DesignThe perforated front, top, and bottom design ensures optimal thermal airflow, promoting excellent heat dissipation throughout the system. |
Routing SpaceA generous 28mm of space is provided behind the motherboard tray, allowing for efficient cable management and ensuring a clean and organized build. |
Edge-To-Edge Side PanelDisplay your meticulously crafted build with pride through the transparent side panel, allowing for a stunning showcase of your components and lighting effects. |
Q300L | ARGB GPU Bracket | ML240L Core | Hyper 212 Halo | Halo² 120 | V850 SFX Gold | |
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Customer Reviews |
4.5 out of 5 stars
12,212
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4.6 out of 5 stars
890
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4.6 out of 5 stars
11,268
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4.7 out of 5 stars
7,519
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4.8 out of 5 stars
40
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4.5 out of 5 stars
1,043
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Products | M-ATX Tower Case | MasterAccessory | Liquid Cooler | Air Cooler | Fan | Power Supply SFX |
Compatible | ✓ | ✓ | ✓ | ✓ | ✓ | |
Cooler Clearances | 159mm | 154mm | ||||
Radiator Clearances | Up to 240mm | 240mm | ||||
LEDs | Addressable RGB | Addressable RGB | Addressable Gen 2 RGB | Addressable Gen 2 RGB | ||
Support | ITX | M-ATX | Full |ATX|M-ATX| Mini-ITX Case | AMD AM5|AM4, Intel LGA 1700|1200|115X | AMD AM5|AM4, Intel LGA 1700|1200|115X | 120mm Case | Air Cooler |AIO | 80 PLUS Gold | SFX 12V Ver. 3.42 |
Fans | Up to 5x 120mm | 2x 140mm | 120mm | ||||
Pre-installed Fans | 1x 120mm PWM | Dual 120mm ARGB PWM | Halo² 120mm ARGB PWM | Halo² 120mm ARGB PWM | 92mm | |
GPU Dimensions | 360mm | |||||
Dimensions (LxWxH) | 387 x 230 x 381mm | 58 x 58 x 177mm | 277 x 119.6 x 27.2mm | 124 x 73 x 154mm | 120 x 120 x 25mm | 100 x 125 x 63.5mm |
Compare with similar items
This Item Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00) | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $39.99$39.99 | $59.99$59.99 | -15% $54.99$54.99 List: $64.99 | $64.99$64.99 | $94.99$94.99 | $49.99$49.99 |
Delivery | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 |
Customer Ratings | ||||||
Noise level | 4.2 | 4.4 | 4.6 | 4.4 | 4.3 | 4.2 |
Quality of material | 4.0 | 4.5 | 4.3 | 4.0 | 4.4 | 3.2 |
Easy to assemble | 4.5 | 4.3 | 4.5 | 4.3 | 4.4 | — |
Easy to remove | 4.4 | 4.7 | — | 4.3 | 4.5 | 4.2 |
Value for money | — | 4.1 | 4.5 | 4.5 | 4.8 | 4.1 |
Sold By | Amazon.com | Amazon.com | Antec Prime | Amazon.com | Amazon.com | ZalmanUSA |
case type | mini tower | mini tower | mini tower | tower | mid tower | full tower |
motherboard form factor | Micro-ATX and Mini-ITX | Micro ATX | Micro ATX | Micro ATX/Mini ITX | — | ATX, Micro-ATX, Mini-ITX |
material | Alloy Steel, Plastic | Tempered Glass, Plastic, Metal | — | Tempered Glass | Tempered Glass | Alloy Steel |
cooling method | Fan | Air | Air | Air | Water, Air | Air |
number of usb ports | 2 | 2 | 3 | 3 | 3 | 3 |
fan count | 3 | 5 | 1 | 2 | 2 | 1 |
Videos
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Customer Review: Perfect! Quiet & cool
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Cooler Master Q300L Case Quick Look!
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What's in the box
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Product information
Technical Details
Brand | Cooler Master |
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Item model number | MCB-Q300L-KANN-S00 |
Item Weight | 1.06 pounds |
Product Dimensions | 15.39 x 9.06 x 15 inches |
Item Dimensions LxWxH | 15.39 x 9.06 x 15 inches |
Color | Black |
Manufacturer | Cooler Master |
ASIN | B0785GRMPG |
Country of Origin | China |
Is Discontinued By Manufacturer | No |
Date First Available | December 5, 2017 |
Additional Information
Customer Reviews |
4.5 out of 5 stars |
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Best Sellers Rank | #2 in Computer Cases |
Warranty & Support
Feedback
Product Description
The Master Box Q300L is your straightforward option in the lineup of the brand new Master Box Series from Cooler Master. A Series that might be small in size but excels in functionality and modularity without compromising on the thermal performance. Although the size wouldn't tell, the Master Box Q300L supports a standard ATX PSU which we don't see often in the market with this size. Based on the different system setup, the I/O panel can be adjusted to six different locations, three options at each side of the case. You can decide which setup fits your system best. Due to the cube design of the frame and special pattern design on the magnetic dust filter will make the chassis stand out from the rest. The combination of a practical design and the unique customizable outlook makes the Master Box Q300L The perfect choice for office and home.
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the ease of construction, value, and appearance of the computer chassis. For example, they mention it's easy to configure, and the dust filters are cool looking. They appreciate the space and size. Opinions are mixed on airflow, quality, and magnetic filters.
AI-generated from the text of customer reviews
Customers like the value of the computer chassis. They mention it's a decent case for the price, a solid budget friendly case, and provides looks as well as functionality for a great price. Some appreciate the flexible quality and the washable magnetic dust. Overall, customers are happy with their purchase and recommend it to others.
"...If you want looks as well as functionality for a great price, go with this case." Read more
"...PSU lies about it being semi-modular, very solid quality and flexibility for the money and the washable magnetic dust filter covers are an awesome..." Read more
"Very affordable case with lots of air flow and comes with a built in fan. Very good value for the money and doesn't look bad by any means...." Read more
"...CONCLUSION: This is a very affordable case that is compact and high-airflow with no major issues...." Read more
Customers like the appearance of the computer chassis. They say it offers a blend of style, functionality, and space efficiency. They also appreciate the acrylic side panel and well-painted case. However, some customers have reported issues with the magnetic filters and the window being tinted.
"...It's an interesting design because there are holes all over the top, all over the bottom, and all over the front and you can install 4 fans if you..." Read more
"...Well painted, no sharp edges, easily accommodates full size ATX PSU's but smaller ones are inexpensive and still efficient...." Read more
"...I needed something compact and attractive, but that would have good airflow, sensible cable management options, and room for a standard sized video..." Read more
"Very good solid case, I love the acryllic side panel (no tempered glass=no breaking very resillient)." Read more
Customers like the size of the computer case. They say it fits everything needed easily, has a small footprint, and is a good size for a budget build. Some customers also mention that it fits a full ATX power supply and a big GPU.
"Not sure why regular ATX systems still sell at all, this fits everything needed EASILY, in fact I wish it was a touch smaller if anything and this..." Read more
"...I like how compact the case is and I was able to fit it under a small table...." Read more
"...desktop case offers a blend of style, functionality, and space efficiency that caters to both seasoned enthusiasts and casual users...." Read more
"...However, it is small. There is struggle to fit everything in there (though it will all fit), and the airflow really isn't the best, lading to temps..." Read more
Customers like the ease of construction of the computer case. They mention that the SSD installing method is easy, wiring is easy and there is plenty of room to cram your cables out of. They also appreciate the easy cable management and the fact that it does not effect assembly of the PC. Customers also mention that it's easy to attach additional fans and reattach them.
"...Overall the case was pretty simple to build in. It’s designed very well to maximize airflow while looking great...." Read more
"...Pretty thick case I like it, very simple, short, and roomy for the little things I had no problems so far with service and shipping came right on..." Read more
"...Both doors use thumbscrews, making access to the back super easy for cable routing..." Read more
"...included screws, mounts, zipties, and fan is perfect and the Manual is straight forwardOverall I love this case despite some flaws." Read more
Customers like the space in the computer chassis. For example, they mention it has plenty of room to cram their cables out of view, has a lot of airflow, and has room for case fans and larger GPUs and PSUs. They also appreciate the layout and cable management. Overall, most are happy with the space and functionality of the product.
"...The case overall is pretty sturdy. The wires were organized and the case is also advertised as shown in here in my hands, it’s got labels for the..." Read more
"...Pros:- Overall this was a joy to build in. Lots of spots for cable tie downs (several zip ties are included), passthroughs with clean, rolled..." Read more
"...Thermals are excellent and have no complaints. I like the layout and cable management. Options for tower or vertical placement is really nice...." Read more
"Compact, however it fits my components nicely. Especially for the price, it's really a very decent case.However, it is small...." Read more
Customers have mixed opinions about the quality of the computer chassis. Some mention that it's a very good solid case, while others say that it feels a bit cheap and the preinstalled fan is subpar.
"...Tons of places to put fans, hide excess PSU cabling when the seller of the PSU lies about it being semi-modular, very solid quality and flexibility..." Read more
"...The case overall is pretty sturdy...." Read more
"...The acrylic door is nicely tinted and seems sturdy; they’ve even installed little rubber grommets to prevent the thumbscrews from scratching the..." Read more
"...way the psu sits recessed into the case from the back, and the flimsiness of the case...." Read more
Customers are mixed about the airflow of the computer chassis. Some mention that it has great airflow, while others say that it really isn't the best. They also say that the case is highly ventilated, so it may not even need extra fans.
"...It’s designed very well to maximize airflow while looking great. I think this is an excellent case especially for the price...." Read more
"...fit everything in there (though it will all fit), and the airflow really isn't the best, lading to temps I didn't like...." Read more
"Very affordable case with lots of air flow and comes with a built in fan. Very good value for the money and doesn't look bad by any means...." Read more
"AIRFLOW: The airflow in this case is superb, and it has versatile fan support and placement for both 120 and 140mm fans, especially for how compact..." Read more
Customers are mixed about the magnetic filters. Some like the filters, saying they look good and are washable. Others however, say that the magnets are incredibly weak and can slip if your grip isn't solid.
"...I was pleasantly surprised to see that the filter is magnetic which made removing them to install my fans a breeze (pun intended)...." Read more
"...The magnets are weak so any slight bump makes them slide, or when moving the case around, take them off!..." Read more
"...solid quality and flexibility for the money and the washable magnetic dust filter covers are an awesome touch!..." Read more
"...The dust filters are magnetic but if they're bumped they come off very easy." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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I just built my 10 year old nephew’s PC using this case and I have to say that I was very surprised at how much I loved building in this case. Originally I bought the Compucase HEC HX300 case for 30$ from Newegg and I was just frustrated at the lack of air flow from that case. It only had room for one fan which was the back exhaust and that's it. It didn't even have holes for the power supply's intake fan! It was my fault for not researching enough and buying something so cheap. Then I did a little research and came across this case. It is only 50$ but has everything I want. I've seen PC builders on youtube build with this case and they all had great things to say.
So the first thing I like about this case is obviously how much airflow it allows. It's an interesting design because there are holes all over the top, all over the bottom, and all over the front and you can install 4 fans if you wanted to (2 up top, 2 in front, 2 in bottom) in addition to the included exhaust fan at the back making it support up to 5 fans! Now with all those holes you might be thinking this is going to be an ugly case but as you'll see in the pictures this is not the case (pun intended) and it has very sleek looking dust filters to cover the top, front, and it’s not obvious from the picture but it has a filter on the bottom as well. I was pleasantly surprised to see that the filter is magnetic which made removing them to install my fans a breeze (pun intended). I also imagine cleaning them when they get dirty will also be very simple. You can simple remove them and just rinse with water. One tip when installing fans is that since there’s air holes all over, they actually made a very small indentation around the holes that you should screw in your fans. These “guides” are hard to notice but if you look closely you’ll see them. They have space for 140mm and 120mm fans depending on whatever you want. Air is able to easily flow through the filter so my air flow issues were resolved!
The case also looks very nice in my opinion. I have the black model just because that’s what my nephew wanted but in review videos I’ve seen, the white one looks very nice as well. Cable management at the back is pretty good too and the case comes with a lot of zip ties. The filters I mention above are also very aesthetically pleasing. The power button, 2 USB ports, headphone jack, and speaker jack are on the side which I don’t mind. The interesting thing is that this IO panel can be unscrewed and moved to the other side which is nice. The clear side panel is acrylic but it’s a 50$ case so it’s fine. It doesn’t look bad at all. There’s also room in the cable management area for a 3.5” hard drive and 2 SSD’s inside the main area which is very good.
Overall the case was pretty simple to build in. It’s designed very well to maximize airflow while looking great. I think this is an excellent case especially for the price. If you’re in the market for a cheap but good PC case, then you my friends have stumbled on a cheap but GREAT PC case. I would highly recommend this case and am willing to do even more expensive builds with this case in the future.
One final note I’ll add, I built my nephew’s pc with a Ryzen 5 1600 processor and RX 480 gpu reference model targeting 1080p gaming and the heat in my old case with that one exhaust fan was reaching around 87 degrees C. After I added two intake fans in the front and one exhaust fan in the top along with the back exhaust fan that comes with this case my temperatures went down into the mid 70’s while gaming which is great. If you want looks as well as functionality for a great price, go with this case.
Now, could just be the cooler I chose to use, a very decent Hyper 212 knock off so good size and cheap coolers fit well, but I clearly get 8 degree Celsius lower CPU temps and better overclocking leaving the system oriented horizontally vs. vertically. Just an FYI to try it both ways, but could just be my cooler... If you really want to orient it vertically then I suggest adding a fan for the top of the case blowing hot air from above the CPU out. But, make sure to confirm the CPU cooler specs for height to make sure it will fit, this will accommodate most of the Hyper 212 style coolers, just keep it under 160mm tall, if it's really close, the there is actually a little give to the plexiglass, just don't push it, Hyper 212 is the max in height for sure.
Yes, it would be nice if more than one fan is included, but for the budget it's great, just make sure to add a couple of 120 or 140mm fans to blow in from the front, even cheap/slow ones, and temps are excellent overall.
Cons are that due to the modular design with lots of holes for fan mounting, it doesn't exactly contain fan sound much, but simply use larger 120 or 140mm fans that aren't too fast and there is no whine like you get with smaller fans that have run faster to move much air. Second, the plexiglass does get scuffed up VERY easily.
I'm still keeping this at 5 stars as the overall quality and value still can't be beat. Well painted, no sharp edges, easily accommodates full size ATX PSU's but smaller ones are inexpensive and still efficient.
WELL worth a step up from the super cheapie off-brands, if you are considering spending less, I'll just say this is probably the minimum amount of case to ever consider as the quality for literally maybe $10 more feels more like a $20 upgrade.
Top reviews from other countries
De bonne qualité (sauf peut être le panneau en plastique transparent).
Je suis ravi de mon achat, le montage s'est fait hyper facilement (les ventilateurs ont été un peu galère a placer).
Coté utilisation, il chauffe un peu malgré des bons ventilos et espace dégagé. Mais c'est aussi parce qu'il y a un gros proc et cg dedans.
Super ravi mon achat.
Place pour un seul hdd 3.5 et pour 2 ssd 2.5.
Possibilités d'usage en vertical ou horizontal avec tableau de bord déplaçable sur les 4 côtés.
Filtres anti poussière aimantés.