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  6. Item#: N82E16811119331

  • MXN$832.87
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Cooler Master MasterBox Q300L Micro-ATX PC Case - Compact mATX Computer Case with Magnetic Dust Filters, Modular Adjustable I/O Panel, Perforated Airflow Design, 1 x 120mm Pre-Installed Fan, Black

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  • 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
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Overview
Specs
Reviews (535)
Cooler Master

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.

Cooler Master

System Flexibility

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.

Cooler Master

Magnetic Dust Filters

Patterned magnetic filters create a unique look for your chassis while keeping your system's internals free from excess dust.

Cooler Master

Small Form Factor, ATX PSU Support

Despite the Micro-ATX form factor and the body depth/height of only 370 x 370mm, the MasterBox Q300L can accommodate a normal ATX PSU.

Cooler Master

Edge-to-Edge Acrylic Side Panel

Show off your build through the full size transparent side panel.

Cooler Master

Thermal Performance

The open design of the perforated front, top, and bottom guarantees excellent thermal performance.

Cooler Master

Routing Space

A space 28mm-wide behind the motherboard tray offers open space for hidden cable management.

Patterned Magnetic Dustfilters Special pattern on the dust filter creates a unique outlook for the chassis. Modular I/O Panel 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. Multiple Positioning Options The case can be put in vertical or horizontal position. Edge-to-edge Side Panel Show off your build through the full size transparent side panel. Clean Routing Space Behind the motherboard tray, 28mm of space is offered for cable management. Performance The open design of the perforated front, top and bottom guarantees excellent thermal performance Fan and Radiator Support The front supports up to two 140mm fans and up to a 240mm radiator.

The rear supports a 120mm fan or radiator and the top two 120mm fans. All to ensure you don't have to compromise on performance

Warranty & Returns

Warranty, Returns, And Additional Information

Return Policies*

  • Return for refund within: 30 days
  • Returns are subject to restocking fees and return shipping fees. Please click here to learn more about restocking fees and return shipping fees.
  • This item is covered by Newegg.com's International Order Return Policy.
  • Read full return policy for details.
  • *Subject to applicable law

  • Warranty Notice:

    This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.

Manufacturer Contact Info

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