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Cooler Master MasterBox 540 ARGB ATX Mid-Tower ARGB Ether Front Panel, Removable Top Panel, Front DarkMirror Panel, Mesh Side Intakes, Tempered Glass, SickleFlow 120mm PWM ARGB (MB540-KGNN-S00)
Cooler Master

Cooler Master MasterBox 540 ARGB ATX Mid-Tower ARGB Ether Front Panel

Bottom line: The Cooler Master MasterBox 540 ARGB ATX Mid-Tower ARGB Ether Front Panel: Fits graphics cards up to 410mm long and CPU air coolers up to 165mm tall; main trade-off: box fan count isn't listed; expect to buy extras to fill all seven 120mm slots.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ Fits graphics cards up to 410mm long and CPU air coolers up to 165mm tall
  • ✓ Dual 360mm radiator support on the top and front panels for liquid-cooled builds
  • ✓ Room for up to seven 120mm fans across the chassis
  • ✓ Fully removable top panel makes radiator and fan installation easier
  • ✓ Tool-free, pin-mounted tempered glass side panel with an optional locking screw

Cons

  • ✗ Box fan count isn't listed; expect to buy extras to fill all seven 120mm slots
  • ✗ DarkMirror front feeds air through side mesh intakes, not a full-mesh front panel
  • ✗ PSU length tops out at 180mm, which rules out some longer high-wattage units
  • ✗ Pin-held glass panel needs the optional screw for safe transport

Manufacturer description

A vivid, iridescent design spans the entire front panel of the MasterBox 540. Customizable ARGB strips radiate behind the transparent façade for a stunning display of light. The ARGB strips can be set to match the color scheme of the system inside with an included controller, and will also sync to the motherboard for a limitless potential for customization. A zero-compromise body allows the entire top panel to be removed, making it easier to route large radiators, install fans, and offer better overall access to the build. From aesthetics to component compatibility, the MasterBox 540 amazes…

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SpecPicks Verdict

SpecPicks scored Cooler Master MasterBox 540 ARGB ATX Mid-Tower ARGB Ether Front Panel using a rating × review-volume × price-fit model applied to published specs and reviews across the pc cases category. Cooler Master's pc cases lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for pc cases of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • ARGB Ether Front Panel: Inspired by the design of automotive lighting, the front panel houses ARGB lighting strips paired with a front diffuser. This design element is fused to the DarkMirror finish of the façade, delivering a unique twist on conventional illumination.
  • Standardized ARGB Connector & Controller Included: The ARGB Ether Front Panel can be controlled via software or the included ARGB controller, pre-loaded with unique lighting presets. The controller also comes pre-routed to the RESET/ARGB button in the front panel.
  • Removable Top Panel: The top panel is entirely removable for improved access to the components during assembly. Ease of use also facilitates the mounting of cooling solutions such as fans and radiators.
  • Screwless & Tool-Free Design TG Side Panel: The tempered glass side panel is secured with pins for easy removal, facilitating quick access to the internals without the use of tools. An optional screw can be installed to further secure the tempered glass side panel.
  • Versatile Cooling Options: Support for up to seven 120mm fans and dual 360mm radiators on the top and front panel ensure high compatibility for liquid-cooled systems.
  • Room For Upgrades: Support for up to a 410mm graphics card, a 165mm CPU cooler, and up to a 180mm PSU in length provides room for upgrades to stay ahead of the game.

Full Specifications

BrandCooler Master
ColorATX Mid-Tower ARGB
Fan Size12 centimeters
MaterialTempered Glass
Case TypeMid Tower
Model NameMB540-KGNN-S00
Unit Count1 Count
Light ColorRed,Green,Blue
Model NumberMB540-KGNN-S00
Built-In Media1 Piece
Cooling MethodAir
Item Type NamePC-Case
Number of Fans1
Mfr Part NumberMB540-KGNN-S00
Total Usb Ports3
Antenna LocationBusiness, Gaming
Room For UpgradesSupport for up to a 410mm graphics card, a 165mm CPU cooler, and up to a 180mm PSU in length provides room for upgrades to stay ahead of the game.
Compatible DevicesATX motherboards
Enclosure MaterialTempered Glass
Total USB 2.0 Ports2
Full listing titleCooler Master MasterBox 540 ARGB ATX Mid-Tower ARGB Ether Front Panel, Removable Top Panel, Front DarkMirror Panel, Mesh Side Intakes, Tempered Glass, SickleFlow 120mm PWM ARGB (MB540-KGNN-S00)

Ready to buy?

Cooler Master MasterBox 540 ARGB ATX Mid-Tower ARGB Ether Front Panel, Removable Top Panel, Front DarkMirror Panel, Mesh Side Intakes, Tempered Glass, SickleFlow 120mm PWM ARGB (MB540-KGNN-S00) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Cooler Master MasterBox 540 ARGB ATX Mid-Tower ARGB Ether Front Panel, Removable Top Panel, Front DarkMirror Panel, Mesh Side Intakes, Tempered Glass, SickleFlow 120mm PWM ARGB (MB540-KGNN-S00)
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