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)

Great value micro-atx case. Its cheap and works. Like the compact size and the fact it came with screws, spacers, ties and a fan. I like the magnetic dust filters concept however BEWARE of the very rough and pointed edges which could cut you while handling them. The power button on the side panel worked for me but could be a problem with other builds. I was barely able to fit two Thermalright TL-C14C 140mm fans in the front with the default front facing power button+LED panel layout, while managing the power/led/usb cables in between the two fans to the backpanel but it was a very tight fit. You can move the power panel to top bottom or rear if you have the space. My Thermaltake Smart 700W PSU blocked the bottom though. While the top was blocked the height and size of the Thermalright Phantom Spirit 120 SE Black CPU Cooler. And the rear was blocked by case fan and no real access for cable management through to the back panel. So I had to make the front faced orientation to work, which it did. All in all I am happy with the value of the product.

awesome case great airflow and space the only thing is space for hdd or ssd you will have to make it work if you want a clean looking case and i wish this case had a cover for the psu but all in all i love the case and the airflow of this case definitely worth the money very solid built

I was looking for a small mATX case to use with some older parts that I had in storage (I will list all the parts at the end for reference). So far it's worked great and I didn't really run into any major issues. I like how compact the case is and I was able to fit it under a small table. The computer is for light gaming and web browsing, so thermals have not been bad. Putting all the components together in the case was pretty straight forward. I found it a lot easier to work with than a small ITX or even a full ATX build. I didn't install any fancy or exotic parts (AIO/Water Cooling) and kept it simple, which I feel helped a lot. I like the dust filters that come with the case and the design on the filters give it a nice look. Since I am using a simple CPU (9400F), fan noise is non-existent since the processor doesn't generate a lot of heat. I'm using some Corsair RGB fans (x2 in front panel/x2 top of case), which look great and have them configured to silent in iCUE. There are a few issues so far with the case: 1) Stock outtake fan stops spinning randomly. I have it connected to the motherboard and have set the fan to full speed, but it does not fix the issue. I've also tried other fan headers on the board, but the fan continues to stop spinning. Not a big deal since a basic case fan is inexpensive, so I will be replacing it. 2) The Plexiglass can scratch easily if your not careful. I debated taking off the plastic film for this reason, but decided to remove it in the end. Glass would have been better, but for the price, you really can't complain. 3) Expansion slot covers are attached to the case, so removing them can be a little tricky. I ended up bending one of the slots a little bit, but was able to fix it by bending it back into place carefully. Finally, the only other thing that would have been nice is to have an all-in-one front panel connector. This would definitely help inexperienced builders to easily connect the front panel ports/power to the board without much struggle. Overall I'm happy with the case and do recommend it for anyone looking for an inexpensive mATX build that will look great. PC Specs: AsRock B365M Pro 4 Motherboard i5 9400F 8GB TeamGroup RAM 2133Mhz (two modules) RX 570 4GB TeamGroup SSD EVGA 650W Power Supply ATX (non-modular) ID Cooling Low-Profile CPU Fan (IS-47-XT) x4 Corsair SP120 RGB Fans with Commander Core

The good: Very good value for money. Case is well built despite being so cheap. I have a full length RTX 5060 Ti in this with room to spare for fans on the front of the case. Cable routing options are good. Plenty of space to run and tuck cables behind motherboard tray. I like the subtle grey/black color scheme. The bad: It's a little flimsy in spots, but it's 40 bucks and not gonna be moved a lot. Overall: If you want a basic, small, cheap but still very capable case for your next build, this is it. Will probably by another for my next build.

So first I'd like to state that this review is specifically for the Q300L model. Amazon does this annoying thing where they mix all the reviews of all the models together and I can't stand it so I'm just stating the model flat out. 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.

Rebuilt my htpc with some cannibalized parts from another pc upgrade. Mini-itx Asus ROG Strix with 2700x, 2070 super, Corsair 850x, M.2, and 2.5 SSD. Some things to note: PSU bracket is kind of odd, makes for a recessed ATX psu. Cable management is a bit challenging, front IO cables a bit shorter than they could be. Virtually zero space for CPU power, took me forever to get it plugged in. Airflow is good. I did 2 120mm intakes, you could fit 140's easily. Dust covers slide around very easily. Case screws and standoffs are in a tiny tear-open bag which underscores the low price of entry. Looks decent enough. I wouldn't buy it again, but it isn't at all bad. First time builders may want to choose something with a bit more QOL.

I’ve been using the Cooler Master Q300L for a few weeks now, and I really like it. First off, it looks great—clean design, tempered acrylic side panel shows off my build nicely. The magnetic dust filters are a lifesaver; keeping the inside clean is way easier than my last case. It’s compact but still roomy enough for a Micro-ATX board, a decent GPU, and a couple of extra fans. Cable management isn’t perfect, but it’s manageable if you take your time. For the price, this case gives you style, functionality, and solid airflow without breaking the bank. Definitely recommended for a budget-friendly build.

I had to build a computer for my parents on like a day's notice (long story). So I searched Amazon for budget cases with basic features. I found this one, and I must say, I'm almost jealous of the thing. It's really compact and nice, and the dust covers are a stroke of genius. They just pop on with magnets, so you can pull them off and clean them any time. Also, you can set this up vertically like a standard case, or horizontally if you prefer. You can move the power switch and USBs and whatnot to several other positions (it comes with them middle-front on the left side as seen in pictures). The only thing I didn't enjoy was installing the mobo standoffs, which is really tight. Also, in my specific case, I was using an older power supply that isn't modular and had about a million cables I didn't need, which I really had to stuff into the area behind the mobo. I think that's a pretty specific problem to my particular build tho. Overall, I absolutely love this case and feel it has to be about the best case there is at this price point.