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Silver open-frame Micro-ATX chassis with aluminum frame, tempered glass and mesh panels, pre-installed rear ARGB fan

Cooler Master

Cooler Master MF400M-SHNN-S00 PC Case Silver

SKU CH-65FR-98NJ8 MPN MF400M-SHNN-S00

Open-frame aluminium chassis for Micro-ATX and Mini-ITX builds, supports 360 mm top radiator, 390 mm GPU and up to nine fans

  • ColorSilver
  • Case MaterialAL + SGCC + TG / Mesh
  • Motherboard CompatibilityMicro ATX / Mini ITX
  • Dust FiltersFront / Side
  • Internal 3.5" Drive Bays1
  • Internal 2.5" Drive Bays1

Color Sliver

  • Switch between vertical, horizontal or inverted layouts to match your desk setup
  • Open aluminium frame gives rigid structure and unrestricted airflow for cooler components
  • Fits Micro-ATX and Mini-ITX boards with room for up to nine fans and a 360 mm top radiator
  • Front panel offers two USB 3.2 Gen 1 Type-A ports and one USB 3.2 Gen 2x2 Type-C port
  • Pre-installed rear 120 mm ARGB fan provides immediate lighting and airflow

Modular mATX open frame

The Cooler Master MasterFrame 400 is a silver aluminium open-frame chassis that accepts Micro-ATX and Mini-ITX motherboards. It ships with one 120 mm ARGB fan at the rear and supports up to nine fans across front, top, rear and bottom positions. The layout can be switched between vertical, horizontal and inverted orientations to suit different desk setups.

Clearances and connections to verify

Your graphics card must not exceed 390 mm in length and the CPU cooler must stay within 190 mm height. The power supply is limited to 160 mm depth. Front I/O provides two USB 3.2 Gen 1 Type-A ports, one USB 3.2 Gen 2x2 Type-C port and a 3.5 mm combo audio jack. Dust filters cover the front and side intakes.

Best for showcase builds, not silent workstations

The open mesh structure and extensive fan mounts suit builders who want maximum airflow and visible hardware in a compact 471 x 261 x 373.8 mm footprint. It also fits a top-mounted 360 mm radiator for liquid cooling. The exposed design offers little sound dampening, so users who prioritise a quiet office PC should consider a closed-panel case instead.

Pontos fortes

  • Switch between vertical, horizontal or inverted layouts to match your desk setup
  • Open aluminium frame gives rigid structure and unrestricted airflow for cooler components
  • Fits Micro-ATX and Mini-ITX boards with room for up to nine fans and a 360 mm top radiator
  • Front panel offers two USB 3.2 Gen 1 Type-A ports and one USB 3.2 Gen 2x2 Type-C port
  • Pre-installed rear 120 mm ARGB fan provides immediate lighting and airflow

Especificações

BrandCooler Master
SeriesMaster Frame Series
ModelMF400M-SHNN-S00
ColorSilver
Case MaterialAL + SGCC + TG / Mesh
Motherboard CompatibilityMicro ATX / Mini ITX
Dust FiltersFront / Side
Internal 3.5" Drive Bays1
Internal 2.5" Drive Bays1
Front Ports2 x USB 3.2 Gen 1 Type A / 1 x USB 3.2 Gen 2 x 2 Type C
1x 3.5MIc/ Audio Combo Jack
Fan OptionsFront: 2 x120mm / 1 x 140mm, 1 x 180mm, 1 x 200mm(Conditional Support)
Top: 3 x120mm / 2 x 140mm / 2 x 180mm, 2 x 200mm (Fan thickness = 25.5mm)
Rear: 1x 120 mm
Bottom: 3x 120mm, 2x 140mm, 2x 180mm, 2x 200mm, and all fans up to 30mm thick.
Pre-installed FansRear: 1x Sickle Flow 120 mm ARGB Black / 1x Sickle Flow 120 mm ARGB White
Radiator OptionsRear - Up to 120mm / Top - Up to 240mm / Top - Up to 280mm / Top - Up to 360mm
Max GPU Length390 mm
Max CPU Cooler Height190 mm
Max PSU Length160 mm
Dimensions471 x 261 x 373.8 mm
Weight8kg
Peso de envio10.57 kg
Dimensões da embalagem584 × 483 × 320 mm

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Perguntas sobre este artigo

Will my 390 mm graphics card fit without hitting the front panel?

The case allows up to 390 mm GPU length, so a card of that size will fit with no clearance issue.

Can I mount a 360 mm radiator on the top while using the pre-installed rear fan?

Yes, the top supports up to 360 mm radiators and the rear 120 mm ARGB fan is already installed, leaving the top free for the radiator.

Which motherboard form factors are supported and how many drive bays are available?

Micro-ATX and Mini-ITX boards are supported, with one internal 3.5-inch bay and one internal 2.5-inch bay for storage.

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