Computer Cases

CoolerMaster MasterBox Q300L Gaming Mini Tower Computer Case with Window Panel Retro

With side window, air filters, and panel doors that can be placed in six positions. Can be placed vertically or horizontally.

With side window, air filters, and panel doors that can be placed in six positions. Can be placed vertically or horizontally.

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Description

Description

With side window, air filters, and panel doors that can be placed in six positions. Can be placed vertically or horizontally.

Air filters

The design of the air filters creates a unique look in the case.

Removable I/O panel

The panel with the ports can be placed on the front, top, or bottom of the case.

Cable Management

Behind the motherboard, there is a 28mm space for the installation of all cables.

Cooling Performance

The perforated design on the front, top, and bottom ensures excellent cooling

Manufacturer

See full description

Specifications

Specifications

Main Specifications

Colour
White
Size
Mini Tower
Compatible Motherboard Type
Micro ATX, Mini ITX

Dimensions

Height
378 mm
Width
230 mm
Length
387 mm

Internal Spaces

Maximum Graphics Card Length
360 mm
Maximum Processor Heatsink Height
159 mm

Drive Bays

Internal Hub 3.5"
1
Internal Hub 2.5"
2

Fan Positions

Front
2
Rear
1
Top Positions
2
Bottom Positions
1

Water Cooling

Radiator Position
Front, Back

Specifications

Connectivity
Audio, Microphone, USB 3.0
Extras
Side Window
Gaming
Yes
Airflow
-
Home & Office
-

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

See all specifications

Reviews (10)

Reviews

  1. 8
  2. 2
  3. 3 stars
    0
  4. 2 stars
    0
  5. 1 star
    0
Review this product
  • Value for money
  • Silent
  • Dust filtering
  • Air flow
  • Cable management
  • Construction quality
  • Space

Reviews photos

Reviews photos
Reviews photos
Reviews photos
Reviews photos

Reviews by our members

  • vagman_tech
    5
    8 out of 10 members found this review helpful

    Verified purchase

    Beautiful case for 27€ that I got when it was on sale. I wouldn't give it for anything over 30€, however for this specific one since with 50€ one can get a Mid Tower with 2 fans inside instead of the 1 that this one provides.

    Inside the case you will find a bag with the following:
    • tie wraps
    • stand-offs
    • screws for the stand-offs
    • screws for PSU/SSD and
    • 4 (if I understood correctly) cushions for the SSD screws.

    I thought that building would be difficult due to the small space, however it proved to be the opposite. I installed:
    • Motherboard: Micro ATX Gigabyte B550M K
    • PSU: Be Quiet Pure Power 11 500W Full Wired 80 Plus Gold (upgrade)
    • RAM: G.Skill Aegis DDR4 16GB (2x8GB) 3200Mhz (upgrade)
    • Storage: Kingston NV2 250GB
    • CPU: Ryzen 5 5600G (upgrade)
    • WiFi/Bluetooth Card: Gigabyte GC-WBAX200

    It fits an ATX power supply which is a big plus and has a total of 6 fan slots (2 top, 2 front, 1 bottom, 1 rear). However, I struggled to place them as there are no specific positions for the screws so it took me a while to find a position for each fan, where all 4 screw positions align perfectly with the holes of the case, on the front and top.

    As for airflow, I installed 4 Arctic Bionix P120 fans at 30-35% and 1 old CoolerMaster fan that I had left, connected in series with the PST they have, as I don't have a fan hub, and they keep temperatures at very good levels. I can confidently say that the header can handle the 6th and last fan where I will place later after I buy another Arctic Bionix P120. Their settings were made through FanControl: https://getfancontrol.com/

    Ideal for an office PC or someone who doesn't play games. It is beautiful, cheap, and doesn't take up space like a Mid Tower!

    Translated from Greek ·
    • Space
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
    Did you find this review helpful?
    • Space
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
  • x-nos

    Verified purchase

    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Value for money
    • Space
    • Air flow
  • Overpriced box. Purchased for 27 euros! Will come back after 2-3 months of use

    Translated from Greek ·
    • Cable management
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
    • Space
    • Construction quality
    Did you find this review helpful?
    • Space
    • Cable management
    • Silent
    • Dust filtering
    • Construction quality
    • Air flow
    • Value for money
  • Verified purchase

    • Space
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
  • Verified purchase

    • Space
    • Construction quality
    • Silent
    • Value for money
    • Cable management
    • Space
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
  • Verified purchase

    • Silent
    • Value for money
    • Space
    • Cable management
    • Construction quality
    • Dust filtering
    • Space
    • Cable management
    • Construction quality
    • Dust filtering
    • Air flow
    • Value for money
    • Moderate noise
  • Beautiful case for 27€ that I got when it was on sale. I wouldn't give it for anything over 30€, however for this specific one since with 50€ one can get a Mid Tower with 2 fans inside instead of the 1 that this one provides.

    Inside the case you will find a bag with the following:
    • tie wraps
    • stand-offs
    • screws for the stand-offs
    • screws for PSU/SSD and
    • 4 (if I understood correctly) cushions for the SSD screws.

    I thought that building would be difficult due to the small space, however it proved to be the opposite. I installed:
    • Motherboard: Micro ATX Gigabyte B550M K
    • PSU: Be Quiet Pure Power 11 500W Full Wired 80 Plus Gold (upgrade)
    • RAM: G.Skill Aegis DDR4 16GB (2x8GB) 3200Mhz (upgrade)
    • Storage: Kingston NV2 250GB
    • CPU: Ryzen 5 5600G (upgrade)
    • WiFi/Bluetooth Card: Gigabyte GC-WBAX200

    It fits an ATX power supply which is a big plus and has a total of 6 fan slots (2 top, 2 front, 1 bottom, 1 rear). However, I struggled to place them as there are no specific positions for the screws so it took me a while to find a position for each fan, where all 4 screw positions align perfectly with the holes of the case, on the front and top.

    As for airflow, I installed 4 Arctic Bionix P120 fans at 30-35% and 1 old CoolerMaster fan that I had left, connected in series with the PST they have, as I don't have a fan hub, and they keep temperatures at very good levels. I can confidently say that the header can handle the 6th and last fan where I will place later after I buy another Arctic Bionix P120. Their settings were made through FanControl: https://getfancontrol.com/

    Ideal for an office PC or someone who doesn't play games. It is beautiful, cheap, and doesn't take up space like a Mid Tower!

    Translated from Greek ·
    8
  • 0
  • 0
  • Overpriced box. Purchased for 27 euros! Will come back after 2-3 months of use

    Translated from Greek ·
    0
  • 0
  • See all

Description & Specifications

Main Specifications

Colour
White
Size
Mini Tower
Compatible Motherboard Type
Micro ATX, Mini ITX

Dimensions

Height
378 mm
Width
230 mm
Length
387 mm

Internal Spaces

Maximum Graphics Card Length
360 mm
Maximum Processor Heatsink Height
159 mm

Drive Bays

Internal Hub 3.5"
1
Internal Hub 2.5"
2

Fan Positions

Front
2
Rear
1
Top Positions
2
Bottom Positions
1

Water Cooling

Radiator Position
Front, Back

Specifications

Connectivity
Audio, Microphone, USB 3.0
Extras
Side Window
Gaming
Yes
Airflow
-
Home & Office
-

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Description

With side window, air filters, and panel doors that can be placed in six positions. Can be placed vertically or horizontally.

Air filters

The design of the air filters creates a unique look in the case.

Removable I/O panel

The panel with the ports can be placed on the front, top, or bottom of the case.

Cable Management

Behind the motherboard, there is a 28mm space for the installation of all cables.

Cooling Performance

The perforated design on the front, top, and bottom ensures excellent cooling

Manufacturer

Reviews (10)

  1. 8
  2. 2
  3. 3 stars
    0
  4. 2 stars
    0
  5. 1 star
    0
Review this product
  • Value for money
  • Silent
  • Dust filtering
  • Air flow
  • Cable management
  • Construction quality
  • Space

Reviews photos

Reviews photos
Reviews photos
Reviews photos
Reviews photos

Reviews by our members

  • vagman_tech
    5
    8 out of 10 members found this review helpful

    Verified purchase

    Beautiful case for 27€ that I got when it was on sale. I wouldn't give it for anything over 30€, however for this specific one since with 50€ one can get a Mid Tower with 2 fans inside instead of the 1 that this one provides.

    Inside the case you will find a bag with the following:
    • tie wraps
    • stand-offs
    • screws for the stand-offs
    • screws for PSU/SSD and
    • 4 (if I understood correctly) cushions for the SSD screws.

    I thought that building would be difficult due to the small space, however it proved to be the opposite. I installed:
    • Motherboard: Micro ATX Gigabyte B550M K
    • PSU: Be Quiet Pure Power 11 500W Full Wired 80 Plus Gold (upgrade)
    • RAM: G.Skill Aegis DDR4 16GB (2x8GB) 3200Mhz (upgrade)
    • Storage: Kingston NV2 250GB
    • CPU: Ryzen 5 5600G (upgrade)
    • WiFi/Bluetooth Card: Gigabyte GC-WBAX200

    It fits an ATX power supply which is a big plus and has a total of 6 fan slots (2 top, 2 front, 1 bottom, 1 rear). However, I struggled to place them as there are no specific positions for the screws so it took me a while to find a position for each fan, where all 4 screw positions align perfectly with the holes of the case, on the front and top.

    As for airflow, I installed 4 Arctic Bionix P120 fans at 30-35% and 1 old CoolerMaster fan that I had left, connected in series with the PST they have, as I don't have a fan hub, and they keep temperatures at very good levels. I can confidently say that the header can handle the 6th and last fan where I will place later after I buy another Arctic Bionix P120. Their settings were made through FanControl: https://getfancontrol.com/

    Ideal for an office PC or someone who doesn't play games. It is beautiful, cheap, and doesn't take up space like a Mid Tower!

    Translated from Greek ·
    • Space
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
    Did you find this review helpful?
    • Space
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
  • x-nos

    Verified purchase

    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Value for money
    • Space
    • Air flow
  • Overpriced box. Purchased for 27 euros! Will come back after 2-3 months of use

    Translated from Greek ·
    • Cable management
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
    • Space
    • Construction quality
    Did you find this review helpful?
    • Space
    • Cable management
    • Silent
    • Dust filtering
    • Construction quality
    • Air flow
    • Value for money
  • Verified purchase

    • Space
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
  • Verified purchase

    • Space
    • Construction quality
    • Silent
    • Value for money
    • Cable management
    • Space
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
  • Verified purchase

    • Silent
    • Value for money
    • Space
    • Cable management
    • Construction quality
    • Dust filtering
    • Space
    • Cable management
    • Construction quality
    • Dust filtering
    • Air flow
    • Value for money
    • Moderate noise
  • Beautiful case for 27€ that I got when it was on sale. I wouldn't give it for anything over 30€, however for this specific one since with 50€ one can get a Mid Tower with 2 fans inside instead of the 1 that this one provides.

    Inside the case you will find a bag with the following:
    • tie wraps
    • stand-offs
    • screws for the stand-offs
    • screws for PSU/SSD and
    • 4 (if I understood correctly) cushions for the SSD screws.

    I thought that building would be difficult due to the small space, however it proved to be the opposite. I installed:
    • Motherboard: Micro ATX Gigabyte B550M K
    • PSU: Be Quiet Pure Power 11 500W Full Wired 80 Plus Gold (upgrade)
    • RAM: G.Skill Aegis DDR4 16GB (2x8GB) 3200Mhz (upgrade)
    • Storage: Kingston NV2 250GB
    • CPU: Ryzen 5 5600G (upgrade)
    • WiFi/Bluetooth Card: Gigabyte GC-WBAX200

    It fits an ATX power supply which is a big plus and has a total of 6 fan slots (2 top, 2 front, 1 bottom, 1 rear). However, I struggled to place them as there are no specific positions for the screws so it took me a while to find a position for each fan, where all 4 screw positions align perfectly with the holes of the case, on the front and top.

    As for airflow, I installed 4 Arctic Bionix P120 fans at 30-35% and 1 old CoolerMaster fan that I had left, connected in series with the PST they have, as I don't have a fan hub, and they keep temperatures at very good levels. I can confidently say that the header can handle the 6th and last fan where I will place later after I buy another Arctic Bionix P120. Their settings were made through FanControl: https://getfancontrol.com/

    Ideal for an office PC or someone who doesn't play games. It is beautiful, cheap, and doesn't take up space like a Mid Tower!

    Translated from Greek ·
    8
  • 0
  • 0
  • Overpriced box. Purchased for 27 euros! Will come back after 2-3 months of use

    Translated from Greek ·
    0
  • 0
  • See all