Cooler Master MasterBox Q300L Micro-ATX Mini-Tower Chassis (Black)

The MasterBox Q300L 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 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.

- 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 MasterBox Q300L 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
- Edgo-to-Edge Acrylic Transparent Side Panel: Show off your build through the full size transparent side panel

General

Brand:	Cooler Master
Series:	MasterBox
Release date:	December 2017
Package Dimensions:	460 x 430 x 270mm (L x W x H)
Categories:	Computers > Components > Computer Cases > Mini Cases
LSN:	XQL-9HS-AJ2-2
Barcode:	0884102038006
Colour:	Black
Model Number:	MCB-Q300L-KANN-S00
Type:	PC

Case Type

Form Factor:

Midi-Tower

Configuration

Expansion Slots:	4
Material:	Plastic • Steel
Max GPU Length:	36
Maximum CPU Cooler Height:	15.7
Maximum PSU Length:	16
Motherboard Compatibility:	Micro-ATX • Mini-ITX
Number of 2.5" Bays:	2
Number of 3.5" Bays:	1
PSU Position:	Bottom
Side Panel:	Yes
Supported Hard Drive Sizes:	2.5 • 3.5"

Cooling System

Bottom Fan Diameter Supported:	120
Bottom Fans - Max:	1
Front Fan Diameter Supported:	120 • 140
Front Fans - Max:	2
Rear Fan Diameter Supported:	120
Rear Fans:	1x 120 mm
Rear Fans - Max:	1
Top Fan Diameter Supported:	120
Top Fans - Max:	2

Water Cooling

Liquid Cooling Capability:

Yes

Other Features

Audio Input:	Yes
Audio Output:	Yes

Ports

USB 3.0 (3.1 Gen 1) Type-A Ports:

2

Physical Specification

Cable Management:	Yes
Item Depth (mm):	387
Item Height (mm):	378
Item Width (mm):	230
LEDs:	Yes
Weight (kg):	3.7

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Review This Product

BEST CHASSIS EVER!!!

Thu, 8 Sep 2022 | Review by: Bariq J.

AWSOME!!! I must say this is a great product. Love how the 3.5" drive mounts behind the motherboard so it's not visible through the side panel. Also the easy mounting of the 2.5" drives, it just slots in with the rubber mountings making is so easy to access and be removed if needed. Truelly happy with this product and it's lightweight and compact. AWESOME PRODUCT.

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