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🖤 Master your setup with the MasterBox Q300L — where compact meets cool.
The Cooler Master MasterBox Q300L is a compact mini-tower PC case designed for Micro-ATX and Mini-ITX motherboards. It features a spacious interior for easy assembly, supports up to six fans for superior air cooling, and includes 2 USB 3.0 ports for modern connectivity. Constructed from alloy steel and acrylic, it balances durability with sleek aesthetics, making it a top choice for professionals seeking a stylish yet functional PC case.











| ASIN | B0785GRMPG |
| Amazon Bestseller | #113,711 in Computers ( See Top 100 in Computers ) #622 in Computer Cases |
| Antenna Location | Gaming |
| Brand | Cooler Master |
| Built-In Media | 1 x Computer Case |
| Case Type | Mini-Tower |
| Color | Black |
| Compatible Devices | Desktop PC |
| Cooling Method | Air |
| Customer Reviews | 4.4 4.4 out of 5 stars (14,531) |
| EU Spare Part Availability Duration | 2 Years |
| Enclosure Material | Alloy Steel Plastic |
| Fan Size | 144 Millimeters |
| Global Trade Identification Number | 00884102038006, 00884102095313, 04719512065488 |
| Hard Disk Form Factor | 3.5 Inches |
| Internal Bays Quantity | 1 |
| Item Dimensions D x W x H | 38.7D x 23W x 37.8H cm |
| Item Type Name | Grocery |
| Item Weight | 480 Grams |
| Manufacturer | Cooler Master |
| Mfr Part Number | MCB-Q300L-KANN-S00 |
| Model Name | Q300L |
| Model Number | MCB-Q300L-KANN-S00 |
| Number of Fans | 3 |
| Other Special Features of the Product | Adjustable, Breathable, Compatible with CPU Coolers, Dust Filter, Edge-to-edge panels |
| Power Supply Maximum Output | 500 Watts |
| Power Supply Mounting Type | Bottom Mount |
| Supported Motherboard | Micro-ATX and Mini-ITX |
| Total Expansion Slots Quantity | 4 |
| Total USB 3.0 Ports | 2 |
| Total Usb Ports | 2 |
| UPC | 884102095313 884102038006 |
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