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Black mid-tower ATX case with a rectangular steel chassis and matte finish

Cooler Master

Cooler Master MasterBox 600 ATX Mid Tower Black PC Case

SKU CH-4KQ3-RKJE9

ATX mid-tower case in black supporting standard motherboard layouts for custom PC builds

  • Product typeATX Mid
  • Product colorBlack
  • Supports ATX motherboards for versatile builds
  • Mid-tower design fits standard components
  • Black finish suits clean aesthetics
  • MasterBox 600 series for organised layouts
  • Manufacturer tested for 100% functionality

MasterBox 600 ATX Mid-Tower Case

The Cooler Master MasterBox 600 is a black mid-tower chassis built for ATX motherboards. It provides a standard enclosure for desktop computer assembly with a clean, dark exterior.

Suits ATX builders; not for larger boards

This case fits builders planning a standard ATX system who want a mid-tower footprint. It is not for users who need support for Extended ATX or larger motherboard form factors.

ATX mid-tower form factor

The defining specification is the ATX mid-tower form factor, which determines the motherboard sizes and internal volume available for components. This single constraint decides whether the chassis matches the build plan.

How it compares

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

Price $83.99
Cheaper than about 60% of the 1,468 comparable items (median $100.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameCooler Master
Product lineMasterBox 600
Part numberMB600-KGNN-S00
Product typeATX Mid
Product colorBlack

Questions about this item

How do I confirm the MasterBox 600 is fully functional after building my PC?

Power on the system and verify that all installed components are detected in the BIOS and that front-panel I/O ports respond correctly.

What comes in the box with the MasterBox 600 and what must I buy separately?

The case includes the chassis, side panels, and standard mounting hardware; you must purchase the motherboard, power supply, drives, cooling fans and any additional cables separately.

Which MasterBox 600 variant should I choose for my build?

The listed model is the MB600-KGNN-S00 in black with an ATX mid-tower layout; no other versions or capacities are offered in this listing.

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