Skip to content
  • IT SUPPORT & MANAGED SERVICES
  • SUPPORT AREA
  • IT SUPPORT & MANAGED SERVICES
FirstNet Direct LtdFirstNet Direct Ltd
  • Login
  • Basket / £0.00
    • No products in the basket.

  • Basket

    No products in the basket.

  • Home
  • Services
    it services
    Managed IT Services
    Managed Security Services
    Cloud Services
    Web & Hosting
    Telephony
    Training
    Cyber Security
    Cyber Essentials
    GDPR Compliance
    Managed Endpoint Security
    Penetration Testing

    Contact Us for more information on the services we provide

    • Shop
      Cables
      Cameras
      Cases
      Graphics Cards
      Hard Drives
      Laptop Chargers
      Laptops
      Laptop Power Adapters
      Memory
      Monitos
      Networking
      Power Supplies
      Pre Built Systems
      Software
      System Builds
      Uncategorised

      Hak5

      Now In Stock

      View products

      Windows 11 Pro

      Now In Stock

      Buy Now!
    • Support
    • News
    • About Us
    • Contact Us
    Add to wishlist
    Cases

    Cooler Master MasterBox Q300L Micro Tower 2 x USB 3.0 Acrylic Side Window Panel Black Case

    Cooler Master MasterBox Q300L Micro Tower 2 x USB 3.0 Acrylic Side Window Panel Black Case

    SKU: a0bcdb4b5ddf Category: Cases
    Search all products…
    Browse
    • Cables
    • Cameras
    • Cases
    • Graphics Cards
    • Hak5
    • Hard Drives
    • Laptop Chargers
    • Laptops
    • Laptops - Power Adapters
    • Memory
    • Monitors
    • Networking
    • Power Supplies
    • Pre-built systems
    • Software
    • System Builds
    • Uncategorized
    Recently Viewed
    • DeepCool DQ850-M-V2L 850W 120mm Silent High Performance Fan 80 PLUS Gold Fully Modular PSU
    • Lenovo V50s-07IMB 11EF0016UK Small Form Factor Desktop, Intel Core i5-10400 10th Gen, 16GB RAM, 512GB SSD, Windows 10 Pro
    • DeepCool DQ650-M-V2L 650W 120mm Silent High Performance Fan 80 PLUS Gold Fully Modular PSU
    • Description
    • Additional information

    The MasterBoxQ300L 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 magnetic 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.

    Features
    – 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 MasterBoxQ300L 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.
    – Edge-to-Edge Acrylic Transparent Side Panel: Show off your build through the full size transparent side panel.
    – Vertical and Horizontal Position: The case can be put in vertical and horizontal position.

    Model
    MasterBox Q300L
    MCB-Q300L-KANN-S00

    Colour
    Black

    Materials
    Steel
    Plastic

    Dimensions ( L x W x H )
    387 x 230 x 378 mm

    Motherboard Support
    Micro ATX
    Mini-ITX

    Expansion Slots
    4

    Drive Bays
    5.25″: 0
    3.5″ HDD: 1
    2.5″ SSD: 2

    I/O Port
    2 x USB 3.0
    Audio In / Out

    Pre-Installed Fans
    Front: N/A
    Rear: 1 x 120mm

    Fan Support
    Front: 2 x 120/140mm
    Top: 2 x 120mm
    Rear: 1 x 120mm
    Bottom: 1 x 120mm

    Radiator Support
    Front: 1 x 120/240mm
    Rear: 1 x 120mm

    Clearances
    CPU Cooler: 157mm
    PSU: 160mm
    GPU: 360mm

    Cable Routing
    Behind MB Tray: 28mm

    Power Supply Support
    Bottom mount
    ATX PS2

    Weight 5.07 kg

    Related products

    Add to wishlist
    Quick View

    Cases

    CiT Flash Micro Tower 1 x USB 3.0 / 2 x USB 2.0 Tempered Glass Side & Front Window Panels Black Case with RGB LED Fans

    Add to wishlist
    Quick View

    Cases

    ANTEC NX210 Case, Gaming, Black, Mid Tower, 1 x USB 3.0 / 2 x USB 2.0, Tempered Glass Side Window Panel, Addressable RGB LED Fans, ATX, Micro ATX, Mini-ITX

    Add to wishlist
    Quick View

    Cases

    ANTEC DF800 FLUX Case, Gaming, Black, Mid Tower, 2 x USB 3.0, Tempered Glass Side Window Panel, Geometrical Mesh Design & Mirror Surface Front Panel, Addressable RGB LED Fans, Patented F-LUX Platform Cooling Solution, ATX, Micro ATX, Mini-ITX

    Add to wishlist
    Quick View

    Cases

    ANTEC VSK-4000B-U3/U2 Case, Home & Business, Black, Mid Tower, 1 x USB 3.0 / 1 x USB 2.0, ATX, Micro ATX, Mini-ITX

    Add to wishlist
    Quick View

    Cases

    CiT Elite Micro Tower 1 x USB 3.0 / 1 x USB 2.0 Black Case with 500W PSU

    Add to wishlist
    Quick View

    Cases

    ANTEC P10 FLUX Case, Silent, Black, Mid Tower, 2 x USB 3.0, Sound-Dampening Foam Panels, Patented F-LUX Cooling Platform, Reversible Swing Front Panel Design, ATX, Micro ATX, Mini-ITX

    Our Services

    Managed IT Services

    Cloud Services

    Cyber Essentials

    Penetration Testing

    Managed Endpoint Security

    GDPR Compliance

    Your Account

    Create Account

    Sign In

    Cart

    Track Your Order

    Returns Policy

    Latest News
    • 31
      May
      What Is App Fatigue & Why Is It a Security Issue? Comments Off on What Is App Fatigue & Why Is It a Security Issue?
    • 25
      May
      These Everyday Objects Can Lead to Identity Theft Comments Off on These Everyday Objects Can Lead to Identity Theft
    • 20
      May
      How to Use the New Virtual Appointments in Microsoft Teams Comments Off on How to Use the New Virtual Appointments in Microsoft Teams
    Need Support?

    Client Area

    Contact Us

    Support Types

        

    Trustpilot

    Copyright 2025 © Firstnet Direct Ltd
    Registered in England Reg No.: 07132409 | 28 Croft Close, Two Gates, Tamworth B77 1BF
    Privacy Policy | Cookie Policy | Terms & Conditions
    • Home
    • Services
      • IT Services
        • Managed IT Services
        • Cloud Services
        • Core Products
      • Cyber Security
        • Cyber Essentials
        • GDPR Compliance
        • Managed Endpoint Security
        • Penetration Testing old
    • Shop
      • Cables
      • Cases
      • Hard Drives
      • Laptop Chargers
      • Laptops
      • Memory
      • Monitors
      • Power Supplies
      • Pre-built systems
      • System Builds
    • Support
    • News
    • About Us
    • Contact Us
    • Login
    • SUPPORT AREA

    Login

    Lost your password?

    Register

    A link to set a new password will be sent to your email address.

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.