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Black mini-tower PC case with tempered glass side panel and steel construction

Cooler Master

Cooler Master Q300L Black Mini-ITX Mini Tower PC Case

SKU CH-K4MN-0QBRK MPN Q300L

Mini-ITX mini tower case with tempered glass, supporting four 120 mm fans and 240 mm radiator

  • Product typeMini-ITX
  • Product colorBlack
  • Mini-ITX motherboard support fits compact builds
  • Four 120 mm fan mounts boost airflow
  • 240 mm radiator compatibility enables liquid cooling
  • Tempered glass side panel shows interior
  • Steel construction adds durability

Mini-ITX mini tower chassis

This Mini-ITX mini tower chassis supports a single Mini-ITX motherboard and provides space for 3.5-inch drives. Steel construction with a tempered glass side panel gives a clear view of the interior. No power supply is included.

Builders needing mATX

The case accepts only Mini-ITX motherboards and cannot fit MicroATX or ATX form factors. It also lacks 5.25-inch bays for optical drives. Users needing those form factors or external bays must choose a different enclosure.

240 mm radiator support

A 240 mm radiator can be installed for liquid cooling, while 280 mm and larger radiators are not supported. Four 120 mm and two 140 mm fan mounts are available for air cooling. This limit defines the cooling ceiling for the build.

How it compares

Measured against everything we stock in Tower & Desktop PC Cases, at today’s prices. Recalculated every night.

Price $55.99
Cheaper than about 86% of the 1,468 comparable items (median $100.99).

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Specifications

Product
Brand nameCooler Master
Product lineQ300L
Part numberQ300LV2-KGNN-S00
Product typeMini-ITX
Product colorBlack

Questions about this item

What motherboard form factor does the Q300L Mini-ITX case support?

The Q300L supports Mini-ITX motherboards only; Micro-ATX and standard ATX boards will not fit this chassis.

How many 120 mm and 140 mm fans can be installed in the Q300L?

You can mount up to four 120 mm fans and two 140 mm fans across the front, top and rear positions.

Which side panel does the tempered glass window mount on, and which way does it open?

The tempered glass panel covers the left side and swings open on a hinge; remove the thumbscrews and swing it outward for access.

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