Scan code: LN86432 Manufacturer code: MCB-Q300L-KANN-S00

CoolerMaster MasterBox Q300L Windowed micro-ATX/ITX PC Gaming Case

Cooler Master MasterBox Q300L, Black, Mini Tower Computer Chassis, w/ Window, micro-ATX/Mini-ITX, 120mm Fan, USB 3.0

Thumbnail 1 : CoolerMaster MasterBox Q300L Windowed micro-ATX/ITX PC Gaming Case Thumbnail 2 : CoolerMaster MasterBox Q300L Windowed micro-ATX/ITX PC Gaming Case Thumbnail 3 : CoolerMaster MasterBox Q300L Windowed micro-ATX/ITX PC Gaming Case Thumbnail 4 : CoolerMaster MasterBox Q300L Windowed micro-ATX/ITX PC Gaming Case
Scan code: LN86432 Manufacturer code: MCB-Q300L-KANN-S00
£39.98
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Delivery Options
  • By DPD On 22nd Oct 2019 to your specified address. | £5.48 Receive SMS with one-hour delivery window Weekend, timed and European delivery options are available at checkout

    Have your parcel delivered by DPD to your specified address. Receive SMS with one-hour delivery window

    Weekend, timed and European delivery options are available at checkout
  • Collect instore Collect from our Bolton store, BL6 6PE | Free

    Order online, collect from our Bolton store (25-28 Enterprise Park, Middlebrook, Horwich, Bolton, BL6 6PE)

  • UPS and DPD Pickup Pickup from local convenience store | £4.79

    Collect your parcel from your newsagents, petrol stations and convenience stores

Services
  • SCANPROTECT Protect against installation damage for 28 days. More info

    ScanProtect is an enhanced warranty specifically designed and offered by Scan to reduce the risk of any mishap or damage to components during installation.

    Our aim with ScanProtect is to encourage our customers to upgrade or build their own PC confidently. For a small additional fee our customers are provided with complete peace of mind.

  • 48HR REPLACEMENT If you need to return this item, your replacement will be dispatched within 2 working days of your product arriving back at Scan. More info
Frequently Bought Together

Masterbox Q300L – Windowed Black Mini Tower Gaming PC Case

Cooler Master MasterBox Q300L Mini Tower Gaming PC Case

BUILD YOUR DREAM PC IN A COMPACT FORM The Masterbox Q300L is your straightforward option in the brand new lineup of MasterBox Q series from Cooler Master. This small micro-ATX/ITX gaming case excels in functionality and even supports a standard ATX PSU which is something not common with this size. This unique, cube-design system allows you to choose a setup that suits your play style best, with the I/O panel that can be adjusted to six different locations with three options at each side of the chassis. The Q300L comes in a smooth black finish with a distinctive pattern design on the magnetic dust filter, making your PC totally unique to the rest.

Relish in total Power with a Smaller Design

Cooler Master Micro-Atx Form Factor

SMALLER DIMENSIONS WITH ATX PSU SUPPORT The Q300L has a small Micro-ATX form factor, but despite the depth and height of only 370mm x 370mm, this adaptive case can accommodate a normal ATX PSU, delivering the highest performance out of a small machine.

Show off the Power behind your Rig

Cooler Master Q300L Masterbox Glass Side panel

EDGE-TO-EDGE ACRYLIC SIDE PANEL Display the superiority of your components with the crystal clear side panel that puts your build on show for everyone to see.

Future-Proof Customization

Cooler Master Q300L I/O panel

HIGH FLEXIBILITY FOR SYSTEM BUILDING The adaptive I/O panel can be adjusted to six different locations giving you complete control over the layout over your PC and allowing you to configure it however you want. On both sides of the body you can install the I/O panel at the front, top or bottom to best suit your components.

An Open Design for Optimal Cooling

Cooler Master Q300L Open Design Layout

HIGH COOLING, HIGH PERFORMANCE The Q300L comes with an open design with a perforated front, top and bottom to guarantee exceptional thermal performance to give you fantastic cooling during long gaming sessions.

Compact but Cool Design

Q300L Fan and Radiator Fittings & Sizes

EXTENSIVE FAN AND RADIATOR SUPPORT The Masterbox Q300L comes impresses once again with its ability to hold up to 6 fans on your rig. The front support up to two 140mm fans and up to a 240mm radiator, with the rear supporting a 120mm fan or radiator. The top additionally supports two 120mm fans. This small chassis never compromises on performance.

Keep your PC On-Point with the Dedicated Space

Cooler Master Q300L Component compatibility

MAIN COMPONENTS CLEARANCE The Masterbox Q300L case supports CPU coolers up to 159mm in height, GPUs up to a length of 360mm and power supplies up to 160mm in length. Behind the motherboard tray this impressive case offers a 28mm wide space to keep your cables tidy and hidden away, allowing your build to show off what’s truly important.

Enjoy a Vast Range of Setups

Cooler Master MasterBox Q300L Positions

VERSATILE VERTICAL AND HORIZONTAL POSITIONING The Masterbox Q300L can be placed on its on its side or kept vertical to optimize your space or to change up how you display your components.

Impressive Filtering providing a Clean Build

Cooler Master MasterBox Dust Filtering System

GEOMETRIC PATTERNED DUST FILTERS The unique pattern on the dust filters creates an impressive exterior for the chassis to make your rig stand out from the rest.

Specifications
Core Chassis Specifications
Case Edition MasterBox Q300L
Case Form Factor Mini Tower
Motherboard Form Factor
  • MicroATX
  • Mini-ITX
I/O, Bays & Expansion
Front/Side/Top Panel I/O
  • 1 x Headphone Out
  • 1 x Mic In
  • 1 x Power Button
  • 1 x Reset Button
  • 2 x USB 3.0
Drive Bays
  • 2 x 2.5" Internal
  • 1 x 3.5" Internal
Standard Expansion Slots 4
Vertical Expansion Slots  
Fans & Filters
Fan Bays
  • 2 x 120/140mm
  • 4 x 120mm
Fans Included 1 x 120mm
Fan Controller/Hub  
Dust Filters Bottom
Liquid Cooling Support
Front Radiator Compatibility 1 x 120/240mm
Top Radiator Compatibility  
Bottom Radiator Compatibility  
Rear Radiator Compatibility 1 x 120mm
Side Radiator Compatibility  
Clearances
Max CPU Cooler Height 157 mm
Max GPU Card Length 360 mm
Cable Routing Space  
Side Panels
Window/s Yes
Window Configuration 1 x Main Side
Window Construction Plastic
LED Lighting Functionality
LED Lighting No
LED Lighting Emitters  
LED Lighting Colour  
LED Lighting Support & Control  
Power Supply Compatibility
PSU Included No
PSU Wattage (If Included)  
PSU 80+ Rating (If Included)  
PSU Support ATX
PSU Mounting Location Top Mount, Rear
Max PSU Length 160 mm
Chassis Physical Specifications
Colour Black
Chassis Contruction Materials Steel / Plastic
Dimensions 230 x 378 x 387 (WxHxD mm)
Weight 3.7 kg (Approx)
Please Note  
Additional Information
Scan Code LN86432
Model Number MCB-Q300L-KANN-S00
GTIN 4719512065488
Warranty

Please note your statutory rights are not affected.

For further information regarding Scan's warranty procedure please see our terms and conditions

Details
Duration:
24 months
Type:
Return to base
DOA Period:
28 days
RTB Period:
24 months
Manufacturer Contact Details
Telephone:
0871 472 4747
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Reviews
Cooler Master MasterBox Q300L, Black, Mini Tower Computer Chassis, w/ Window, micro-ATX/Mini-ITX, 120mm Fan, USB 3.0 is rated 4.4 out of 5 by 5.
Rated 4 out of 5 by from Cheap Compact case Good for the cost, feels like a 50 quid case but that's what I wanted, downsized from a fractal define as it has to go on the desk, good depth though it did fit a very large noctua fan
Date published: 2019-04-29
Rated 4 out of 5 by from Great little case bad acoustics I ordered this case on the recommendation of a friend who said it was good for the price and whilst that is true, the noise levels in the case are a little too noisy for my liking especially when the graphics card fans are going. The build quality is good, very sturdy and has a decent amount of space for extra cooling but this also impacts on the noise levels in the case too. I would recommend this case to someone who would only be using the oboard graphics on their cpu or as a media server.
Date published: 2019-03-15
Rated 4 out of 5 by from This case has potential! Pro's: On the sides of the case you can fit fans wherever the holes line up, yes there are holes smaller to indicate where the fans go but you could fit even two 240 rads if you have enough clearence from the motherboard.(would recommend the smallest pump/res you can find if you are trying to do this) The case can be any orientation you choose, be it flat, upside down or vertical as the feet are removable. The case has a nice side panel to cover cable management and storage drives. Con's: The window panel is standard plexi, the PCI-e covers are not reuseable and air flow will be restricting if you do not you High static pressure fans. Final summary: This case is awesome and compact, i get its cheap but a second Gen case with Tempered glass, reusable PCI-e covers and better materials would be a treat.
Date published: 2018-05-21
Rated 5 out of 5 by from Bloody Excellent I wasn't expecting much for the money but actually, this is one of the nicest cases I've ever done a build for someone. Everything is very easy to get at and the cable management system is excellent. My only issue is the magnetic filters weren't quite flat but as it's a covered in a design you can't actually see if it was flat or not. For my own build I am doing later this year I will be looking at Coolermaster cases more after this build.
Date published: 2018-05-10
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Questions & Answers
CoolerMaster MasterBox Q300L Windowed micro-ATX/ITX PC Gaming Case
CoolerMaster MasterBox Q300L Windowed micro-ATX/ITX PC Gaming Case