We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • TypeATX Mid Tower
  • ColorBlack
  • Case MaterialExterior: Steel, Plastic Left Side Panel: Tempered Glass
  • Power Supply MountedBottom
  • Motherboard CompatibilityITX, Micro ATX, ATX (Supporting Back-connector Motherboard),
  • Dust FiltersBottom / Top
  • 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.

Highlights

  • 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

Specifications

BrandCooler Master
SeriesMasterbox 600
ModelMB600-KGNN-S00
TypeATX Mid Tower
ColorBlack
Case MaterialExterior: Steel, Plastic
Left Side Panel: Tempered Glass
Power Supply MountedBottom
Motherboard CompatibilityITX, Micro ATX, ATX (Supporting Back-connector Motherboard), E-ATX (*up to 12” x 10.9” / 30.5cm x 27.7cm motherboards, may impact cable management)
Dust FiltersBottom / Top
Internal 3.5" Drive Bays2
Internal 2.5" Drive Bays2 (Max. 6)
Expansion Slots7
Front Ports2 x USB 3.2 Gen 1 Type-A, 1 x USB 3.2 Gen 2x2 Type-C, 1 x USB 3.2 Gen 1 Type-A, 1 x USB 3.2 Gen 1 Type-C, 1 x Audio,
Fan OptionsTop: 3x 120mm / 3x 140mm
Front: 3x 120mm / 2x 140mm
Rear: 1x 120mm
Pre-installed Fan(s):
Front: 3x 140 ARGB
Rear: 1x 120 ARGB
Radiator OptionsFront: 120/140/240/280/360/420mm
Rear: 120mm
Max GPU Length360mm, 410mm (w/o front radiator)
Max CPU Cooler Height170 mm
Max PSU Length170mm, 210mm (w/o HDD Cage)
Dimensions465 x 230 x 465 mm
Weight7.9 kg
FeaturesThe MasterBox 600 is engineered to elevate performance standards across the PC building community, ensuring all users can access top-tier features and capabilities. With ample room for a 420mm radiator and a 410mm GPU, alongside back-connector motherboard support, it sets a new benchmark for modern ATX cases.
Package ContentMasterbox 600
Tool Kit
Manuel
Shipping weight9.44 kg
Package size559 × 546 × 318 mm

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.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.