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Cooler Master Silencio S400 Steel Mini Tower Case


 MCS-S400-KN5N-S00, Cooler Master Silencio S400 Steel Mini Tower Case
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Key Features

  • Mini Tower
  • Micro-ATX | Mini-ITX
  • Radiator Support: 120/140/240/280mm
  • GPU Max Length: 319mm
  • CPU Cooler Height Limit: 167mm
  • Fans Included: 2 x 120mm
  • Fan Support: 120/140mm
  • USB Ports: 2 x USB 3.2 Gen 1
  • MCS-S400-KN5N-S00

Part No: MCS-S400-KN5N-S00

Stock Code: 6443285


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£79.98 Inc VAT

WAS £79.99

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Cooler Master Silencio S400 Steel Mini Tower Case



The Silenciois a silent case that makes no compromises in thermal performance. Sound dampening material surrounds the system build, rubber padding cushions all included fans, and a removable cover shields noise that escapes from the top panel. The SilencioS400 is available with either a tempered glass or a sound-dampened steel side panel. For demanding systems, the top panel’s Sound Dampening Cover can be removed for increased ventilation. Paired with the front panel’s ventilation, directionally taking in air through the mesh, silence can be accomplished without sacrifice. The subtle ventilation takes in air from three sides of the sound-dampened front door, with the mesh filter aimed toward the bottom for an efficient intake of air.


  • Sound Dampening Material

    Sound dampening material minimizes noise from the pre-installed fans, the power supply, all steel panels, the steel front door, and all storage mounting points for 2.5” and 3.5” drives.

  • Tempered Glass or Sound-Dampened Steel

    The Silencio S400 is available in two versions. Seamless tempered glass to show the system build or sound-dampened steel for optimal noise reduction.

  • Removable Sound Dampening Cover

    The top cover can be removed for increased ventilation or kept in place to reduce noise.

  • Reversible, Steel Front Door

    The sound-dampened, steel front door features a reversible mounting system that is capable of opening in two directions.

  • Versatile HDD Cage

    The HDD cage can be shifted to the front for more PSU clearance, backwards for additional front radiator space, or completely removed if HDD storage is not required.

  • SD Card Reader

    The I/O Panel features an SD Card Reader for rich connectivity.

  • Headset Jack

    The single 4 pole headset jack features both audio and microphone capabilities simultaneously so that separate jacks are not needed.

  • Silencio Fans

    Two Silencio FP 120mm PWM fans are pre-installed with rubber padding to reduce noise. To connect additional fans, one 4pin 1-to-3 splitter is included.

  • Graphics Card Support Up To 319mm

    Generous clearance space is provided to support the latest graphics cards.


  • Product Number - MCS-S400-KN5N-S00
  • Product Name - Silencio S400 (With Steel Side Panel)
  • Exterior Colour - Black
  • Materials:
    Body - Steel, Plastic, Sound Absorbing Material
    Left Side Panel - Sound-Dampened Steel
  • Motherboard Support - Mini-ITX, Micro-ATX
  • Expansion Slots - 4
  • Drive Bays:
    5.25" - 1
    3.5” HDD - 4
    2.5” SSD - 4
  • I/O Panel:
    USB Ports - USB 3.2 Gen1 x 2 (formerly USB 3.0)
    Audio In / Out - 1 x 3.5mm Headset Jack (Audio + Mic)
    SD Card Reader - Supports SD & MMC Cards
  • Pre-installed Fan(s):
    Front - 120mm x 1(PWM 800~1400 RPM)
    Rear - 120mm x 1(PWM 800~1400 RPM)
  • Fan Support:
    Front - 120mm x 2 / 140mm x 2
    Top - 120mm x 1 / 140mm x 1, 120mm x 2 / 140mm x 2 (remove ODD cage)
    Rear - 120mm x 1
  • Radiator Support:
    Front - 120/140/240 / 280mm(remove & reinstall ODD bracket to mount 280mm radiator, may interfere with HDD mounted below ODD bracket)
    Top - 120mm, 240mm*, *240mm requires removal of ODD cage
    Rear - 120mm
  • Clearances:
    CPU Cooler - 167mm
    Power Supply - 325mm (w/o front radiator & HDD cage), 140mm (HDD cage in backmost position)
    Graphics Card - 319mm
  • Cable Routing Behind MB Tray - 20mm
  • Dust Filters - Top, Front, Bottom
  • Power Supply Support - Bottom Mount, ATX PS2
  • EAN Code - 4719512087381
  • UPC Code - 884102059834
  • Net weight - 7.03kg
  • Gross weight - 8.06kg
  • Carton dimension (L x W x H) - 480*278*480mm


From the Manufacturer



Case Form Factor Mini Tower
Colour Black
Motherboard Support Micro-ATX | Mini-ITX
Radiator Support 120mm | 140mm | 240mm | 280mm
GPU Max Length 319mm
CPU Cooler Height Limit 167mm
LED Colour None
Fan Support 120mm | 140mm
Max 2.5" Drives 4
Max 3.5" Drives 4
Max 5.25" Drives 1

Please note: Pictures are for illustration only. Please contact us if you wish to confirm the specification before ordering.


Product Reviews

Cooler Master - MCS-S400-KN5N-S00
Cooler Master Silencio S400 Steel Mini Tower Case


£79.98 Inc VAT

WAS £79.99

Request Stock Alert
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