Let your inner gamer win One class better school year

Cooler Master MasterBox Q300L

Cooler Master MasterBox Q300L
PC Case - mATX (Micro ATX) and mITX (Mini ITX), 1× 3,5" slot(s), 2× 2,5" slot(s), USB 3.2 Gen 1 (USB 3.0), Headphones and Microphone, 1x120mm, max. heat sink height: 159mm, max. graphics card length: 360mm, without power supply, side panel made of acrylic
Price incl. VAT
Price excl. VAT €32.37
In stock > 5 pcs
Hassle-free One-click buying using preset Shipping and Payment options.
Warranty 24 months Code:  CC022a4b Product Number:  MCB-Q300L-KANN-S00 Producer's Website:
Cooler Master MasterBox Q300L €43.78 €39.17 In stock > 5 pcs
Reviewed by 17 customers
Write a review
5 10 ×
4 6 ×
3 1 ×
2 0 ×
1 0 ×
1 000+ Customers Purchased
94 % Customers Recommend

Cooler Master MasterBox Q300L

Do you want to build a dream gaming or multimedia machine and would like a visually appealing design? In that case, the beautifully designed MasterBox Q300L PC case manufactured by Cooler Master is a great choice for you.

Key Features of the Cooler Master MasterBox Q300L?

  • A high-quality stylish PC case
  • Ideal for mATX and miniITX formats
  • Despite its compact dimensions, it can hold a classic ATX power supply
  • Transparent sidewalls
  • 28mm-wide space for hiding cables
  • A wide choice of fans and coolers
  • A modular I/O panel that can be placed in up to 6 positions

Cooler Master MasterBox Q300L - a Pro at a Reasonable Price

The case is well made and very rugged. It features a transparent sidewall, so you can appreciate the internal components. The case can hold MATX or mini ITX motherboards. In addition, it has a 28mm-wide space behind the motherboard, where you can hide all cables. With a perforated top panel, an optimised airflow is achieved to provide the most efficient cooling of all components. The modular I/O panel can be placed in up to 6 positions, according to your needs. The case is equipped with a headphone jack, a microphone connector and 2 high-speed USB 3.0 ports. Of course, it also features slots with enough room for even larger graphics cards that are up to 360mm long and it can also hold a processor heatsink up to 157mm high.

Powerful and Quiet Cooling

The MasterBox Q300L case is ready to cool even the most powerful hardware, as there is enough room for fans and radiators. Of course, it also supports water cooling and is ready for you to install radiators. Additionally, the case has a good-quality, design-patterned filter that prevents damage from dust and dirt.


Mini Tower Done!
Black Done!
Motherboard form factor
mATX (Micro ATX), mITX (Mini ITX) Done!
Number of internal 3.5" slots
Number of internal 2.5" slots

Usage and size

Mini Tower Done!


Black Done!

Internal structure

Motherboard form factor
mATX (Micro ATX), mITX (Mini ITX) Done!
Number of internal 3.5" slots
Number of internal 2.5" slots
Max. processor heat sink height
159 mm Done!
Max. graphics card length
360 mm Done!
Additional equipment
Dust filters Done!

External structure

Front panel location
From the side Done!
Front panel connectors
USB 3.2 Gen 1 (USB 3.0), Headphones, Microphone Done!
Transparent Done!
Side panel material
Acrylic Done!
Additional equipment
Perforated front Done!


Power supply
Without power supply Done!
Supported PSU format
ATX Done!

Cooling system

Front fan size
2x120mm , 2x140mm Done!
Rear fan size
1x120mm Done!
Top fan size
2x120mm Done!
Number of fan positions
Number of mounted ventilators
1x120mm Done!
Supported radiator size from the front
120mm , 240mm Done!


Backlight colour
No backlighting Done!


Wardrobe material
Steel Done!


230 mm (23 cm) Done!
378 mm (37.8 cm) Done!
387 mm (38.7 cm) Done!
3.7 kg Done!
More Specifications

Online chat

Dear customer, your question you can send us a message via the contact form here, respectively. you can solve your query online using chat. If you want to use the chat log , please.

Specifications can be changed without notice. Images are for illustrative purposes only. Retail Price (MSRP) means the manufacturer's/supplier's suggested retail price.

There are no posts in this discussion.
Help others choose the best products...
Write a review
Chcete doručit zboží do Česka? Prohlédněte si Cooler Master MasterBox Q300L. Chcete doručiť tovar na Slovensko? Prezrite si Cooler Master MasterBox Q300L. Für Versand nach Deutschland, besuchen Sie bitte PC-Gehäuse Cooler Master MasterBox Q300L. Für Versand nach Österreich, besuchen Sie bitte PC-Gehäuse Cooler Master MasterBox Q300L. For shipping to the United Kingdom visit this page Cooler Master MasterBox Q300L. Magyarországra történő kiszállításért tekintse meg ezt a termékoldalt: Cooler Master MasterBox Q300L. Souhaitez-vous livrer des produits à la France ? Examinez Cooler Master MasterBox Q300L.

Link to Manufacturer's Website: Enter link to the external review

Note (link, Part number etc.):

My Alza Log In Shipping & Payment About Us
Shipping to:
Select Settings

Why buy from us? We offer great payment options including PayPal & Bitcoin! More info »
We will call you and advise you professionally
+420 225 340 120
Order inquiry
Question about the product
Please enter your telephone:
Call me
We care about your privacy Alza.cz a. s., Company identification number 27082440, uses cookies to ensure the functionality of the website and with your consent also to personalisage the content of our website. By clicking on the “I understand“ button, you agree to the use of cookies and the transfer of data regarding the behavior on the website for displaying targeted advertising on social networks and advertising networks on other websites.
More information Less info