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Cooler Master MasterBox Q300L V2, Black, Mini Tower /w Tempered Glass Window, 1x 120mm Fans, USB 3.2, mITX/mATX


13 in stock

13 in stock


Redesigned Magnetic Dust Filter
The redesigned dust filter keeps your PC breathing easy with a refreshed patterned design.

USB 3.2 GEN2x2 (20Gbps) SUPPORTED
USB 3.2 Gen 2×2 Type C port built into the I/O panel with data transfer speeds up to 20Gbps.

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

Clean Routing Space
28mm of space behind the motherboard tray allow for easy and hidden cable management.

Multiple Positioning Options
The case can be put in vertical or horizonal position.

Edge To Edge Tempered Glass Side Panel
Show off your build through the 4mm-thick tempered glass side panel, easily installed with thumbscrews.

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.

Components Clearance
The Q300L V2 case supports CPU coolers up to a height of 159mm, graphics cards up to a length of 360mm, and power supplies up to a length of 160mm.

Core Specifications

Case Edition
MasterBox Q300L V2

Case Form Factor
Mini Tower

Motherboard Form Factor

I/O, Bays & Expansion

Front/Side/Top Panel I/O
1 x Headphone/Mic Combo
2 x USB 3.2 Gen1 Type-A
1 x USB 3.2 Gen2x2 Type-C

Drive Bays
2 x 2.5″ Internal
1 x 3.5″ Internal

Standard Expansion Slots

Fans & Filters

Fan Bays
6 x 120mm / 2x 140mm

Fans Included
1 x 120mm

Dust Filters

Liquid Cooling Support

Front Radiator Compatibility
1 x 120/240mm

Rear Radiator Compatibility
1 x 120mm


Max CPU Cooler Height
159 mm

Max GPU Card Length
360 mm

Cable Routing Space
28 mm

Side Panels


Window Configuration
1 x Main Side

Window Construction
Tempered Glass

LED Lighting Functionality

LED Lighting

Power Supply Compatibility

PSU Included

PSU Support

PSU Mounting Location
Bottom Mount, Rear

Max PSU Length

Chassis Physical Specifications


Chassis Construction Materials
Steel / Plastic

230 x 383 x 387 (WxHxD mm)

4.35kg (Approx)


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