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Black mid-tower ATX case with tempered glass side panel and FineMesh front, three 140 mm ARGB fans visible inside

Cooler Master

Cooler Master MB600-KGNN-S00 MasterBox 600 ATX Mid-Tower PC Case Black

SKU CH-A11P-Q0ANA MPN MB600-KGNN-S00

A mid-tower ATX case with FineMesh front panel, tempered glass side panel and pre-installed 140mm and 120mm ARGB fans supporting 410mm graphics cards and 420mm front radiators

  • Max graphics card length360 mm, 410 mm (w/o front radiator)
  • Housing materialExterior: Steel, Plastic Left Side Panel: Tempered Glass
  • Power supply mountingBottom
  • Supported motherboard sizesITX, Micro ATX, ATX (Supporting Back-connector Motherboard),
  • Dust filteringBottom / Top
  • 3.5-inch internal bays2
  • Back-connected motherboard support frees up to 35mm behind the tray for cleaner cable routing
  • Front FineMesh panel and three pre-installed 140mm SickleFlow PWM fans deliver high-volume airflow
  • Front radiator support up to 420mm and top support up to 360mm enable extensive liquid-cooling options
  • Graphics cards up to 410mm long and CPU coolers up to 170mm tall fit without clearance issues
  • Removable drive cage holds two 3.5in and six 2.5in drives for flexible storage expansion

Back-connected motherboard support

The MasterBox 600 is an ATX mid-tower case designed for builders using the latest Asus, MSI or Gigabyte boards with back-mounted connectors. It clears up to 33 to 35 millimetres of space behind the motherboard tray for cleaner cable routing. The chassis fits ITX, micro-ATX, ATX and E-ATX boards up to 30.5 by 27.7 centimetres. A USB 3.2 Gen 2x2 Type-C port sits on the front I/O alongside two Type-A ports and audio.

FineMesh front panel with pre-installed ARGB fans

A full-width FineMesh intake feeds three 140-millimetre SickleFlow ARGB fans at the front and one 120-millimetre ARGB fan at the rear. Top mounts accept three 120 or three 140-millimetre fans, while the front can swap to two 140-millimetre units. Radiator support reaches 420 millimetres at the front and 360 millimetres on top. Dust filters cover the top and bottom, and the tempered glass side panel shows the interior.

Removable drive cage for flexible storage layouts

A removable cage holds two 3.5-inch drives and up to six 2.5-inch drives, freeing the front chamber for longer graphics cards or larger radiators. Without the cage the power-supply limit extends to 210 millimetres; with it installed the limit is 170 millimetres. Graphics cards up to 410 millimetres fit when no front radiator is used, while CPU coolers up to 170 millimetres are supported. The case measures 465 by 230 by 465 millimetres and weighs 7.9 kilograms.

How it compares

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

Price $70.99
Cheaper than about 72% of the 1,468 comparable items (median $100.99).
Max graphics card length 360 mm, 410 mm (w/o front radiator)
Lower than about 70% of the 894 comparable items (median 400 mm).

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Specifications

Product
Brand nameCooler Master
Product lineMasterbox 600
Model nameMB600-KGNN-S00
Product typeATX Mid Tower
Product colorBlack
Storage
3.5-inch internal bays2
2.5-inch internal bays2 (Max. 6)
Ports & slots
Expansion card slots7
Front panel ports2 x USB 3.2 Gen 1 Type-A, 1 x USB 3.2 Gen 2 × 2 Type-C, 1 x USB 3.2 Gen 1 Type-A, 1 x USB 3.2 Gen 1 Type-C, 1 x Audio,
Size & build
Max graphics card length360 mm, 410 mm (w/o front radiator)
Housing materialExterior: Steel, Plastic
Left Side Panel: Tempered Glass
Power supply mountingBottom
Dust filteringBottom / Top
Fan mounting optionsTop: 3x 120 mm / 3x 140 mm
Front: 3x 120 mm / 2x 140 mm
Rear: 1x 120 mm
Pre-installed Fan(s):
Front: 3x 140 ARGB
Rear: 1x 120 ARGB
Product dimensions465 × 230 × 465 mm
Product weight7.9 kg
Shipping weight9.44 kg
Package size559 × 546 × 318 mm
Compatibility
Supported motherboard sizesITX, Micro ATX, ATX (Supporting Back-connector Motherboard), E-ATX (*up to 12 in x 10.9 in / 30.5 cm x 27.7 cm motherboards, may impact cable management)
Radiator supportFront: 120/140/240/280/360/420 mm
Rear: 120 mm
CPU cooler height limit170 mm
PSU length limit170 mm, 210 mm (w/o HDD Cage)
In the box
Included itemsMasterbox 600
Tool Kit
Manuel

Questions about this item

Will my ATX power supply fit if I keep both 3.5-inch drives installed?

The case accepts PSUs up to 170 mm long with the HDD cage in place; removing the cage extends clearance to 210 mm.

Can I mount a 420 mm radiator on the front while using a long graphics card?

A 420 mm front radiator is supported, but maximum GPU length then drops from 410 mm to 360 mm.

How much space exists behind the motherboard tray for back-connected board cables?

The design provides 33 to 35 mm of routing depth behind the tray for back-connector motherboards.

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