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Description
Cooler Master MasterBox Q300L Case, Black, Mini Tower, 2 x USB 3.0 Type-A, Edge-to-Edge Acrylic Transparent Side Panel, Unique Patterned Front & Top Dust Filter, Modular I/O Panel, Vertical or Horizontal PositioningThe MasterBoxQ300L is your straightforward option in the lineup of the brand new MasterBox Q 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 wouldnt tell, the MasterBox Q300L supports a standard ATX PSU which we dont see often in the market with this size. Based on the different system setup, the I O panel can be adjusted to
The MasterBoxQ300L is your straightforward option in the lineup of the brand new MasterBox Q-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 MasterBox 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 MasterBox Q300L the perfect choice for office and home usage.
Features
- High Flexibility for System Building: The I/O panel can be adjusted to six different locations. On both side of the body you can install the I/O panel at the front, top or bottom.
- Minimized Dimension with ATX PSU Support: Despite the Micro-ATX form factor and the body depth and height of only 370mm x 370mm, the MasterBoxQ300L can accommodate a normal ATX PSU.
- Patterned Dust Filter: Special pattern on the dust filter creates a unique outlook for the chassis.
- Clean Routing Space: Behind the motherboard tray, it offers 28mm wide and spacy room for hidden cable management.
- Excellent Thermal Performance: The open design of the perforated front, top and bottom guarantees excellent thermal performance.
- Edge-to-Edge Acrylic Transparent Side Panel: Show off your build through the full size transparent side panel.
- Vertical and Horizontal Position: The case can be put in vertical and horizontal position.
Model
MasterBox Q300L
MCB-Q300L-KANN-S00
Colour
Black
Materials
Steel
Plastic
Dimensions ( L x W x H )
387 x 230 x 378 mm
Motherboard Support
Micro ATX
Mini-ITX
Expansion Slots
4
Drive Bays
5.25": 0
3.5" HDD: 1
2.5" SSD: 2
I/O Port
2 x USB 3.0
Audio In / Out
Pre-Installed Fans
Front: N/A
Rear: 1 x 120mm
Fan Support
Front: 2 x 120/140mm
Top: 2 x 120mm
Rear: 1 x 120mm
Bottom: 1 x 120mm
Radiator Support
Front: 1 x 120/240mm
Rear: 1 x 120mm
Clearances
CPU Cooler: 157mm
PSU: 160mm
GPU: 360mm
Cable Routing
Behind MB Tray: 28mm
Power Supply Support
Bottom mount
ATX PS2
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Thank You for this Incredible Book!
Format: Kindle
I am 19 and I am "unofficially" engaged. I know that he and I will most certainly without a doubt be getting married. We have known each other since we were 5 and 6 years old and have built a friendship with God at the center. We are trying our hardest to do things that right way considering we have both come from very (for lack of a better word) dysfunctional house holds. Both of my parents being on their third marriages each and his finally coming back to The Lord after many years of living in the world, haven't always been the best examples for us to learn from. We know exactly how we don't want to lead a marriage but we were not sure exactly how go about leading a proper or Godly marriage. This book, which I accidentally stumbled upon a few weeks ago, has been a serious eye opener and a total reality check. Though I will admit we were in the "tingles" stage, as Dr. Gary Chapman puts it, we have always tried to stay realistic. "Things I Wish I'd Known Before We Got Married" has truly taught us a lot of valuable lessons and I know we will keep the things we have learned from this book close at hand in the coming years.
We thoroughly enjoyed reading this book, but what really made it interesting and kept us flipping the pages were the little anecdotes that were shared about other couples. Listening or reading their experiences really helped us relate to the situations that were being explained. We also liked the "Talking it Over" segments at the end of each chapter. Those we extremely useful when it came to understanding all the information that was just handed to us in the previous reading.
I can not stop telling people about this book. I already have my sister and her husband reading it and it has greatly improved their relationship now after almost 4 months of marriage. I have also recommended it to each of my parents and my fiancé's parents as well because I know they could greatly benefit from it as I did.
Thank You!
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Reviewed in the United States on October 16, 2013
★★★★★ 5
Natural healthy dog treats.
Size: 3.8 Ounce (Pack of 1), Style: Sweet Potato, Ring
Our dog loves these treats. They're also not filled with the junk like in other treats. These are one maybe 2 ingredients only.
Better for our pup.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
My chihuahua loves these
Size: 3.8 Ounce (Pack of 1), Style: Sweet Potato, Ring
My dog loves these so much its her favorite treat.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Dog Treat
Size: 3.8 Ounce (Pack of 1), Style: Sweet Potato, Ring
My dogs really like these! It keeps them busy for a bit.
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Reviewed in the United States on August 26, 2025
★★★★★ 5
Winner, Winner! say My Three Dogs
Size: 3.8 Ounce (Pack of 1), Style: Sweet Potato, Ring
I'm always looking for different treats for my three dogs (10, 20 and 30 pounds, I don't ever recall giving my dogs anything with a pumpkin flavor, so I decided to trythese i-paw pumpkin flavored treats (I got the rings). All three of my dogs took the treat immediately and went off into their separate corners to chew away (one of my dogs is pretty fussy, so I was surprised she took it without hesitation). I'm no expert in dog treat ingredients, but I didn't see anything on the ingredients list that looked objectionable. While advertised as a rawhyde replacement, these rings don't last anywhere near as long as a rawhide, so while my dogs didn't wolf them down as fast as a conventional treat, they weren't left occupied for the half hour that a rawhide of this size might have kept them entertained (except for one of my dogs, who took an hour to finish hers, but she only has 7 teeth left in her mouth, so that's not really a fair comparison). I wouldn't hesitate to order these treats again for my pups.
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Reviewed in the United States on May 29, 2025