% £-90.95
Cooler Master Silencio S400 Gaming Case w/ Steel Sides, Micro ATX, 2x Silencio Fans, Sound Dampening, Card Reader, Black
Cooler Master Silencio S400 Gaming Case w/ Steel Sides, Micro ATX, 2x Silencio Fans, Sound Dampening, Card Reader, Black
Cooler Master Silencio S400 Gaming Case w/ Steel Sides, Micro ATX, 2x Silencio Fans, Sound Dampening, Card Reader, Black
Cooler Master Silencio S400 Gaming Case w/ Steel Sides, Micro ATX, 2x Silencio Fans, Sound Dampening, Card Reader, Black
COOLER MASTER

Cooler Master Silencio S400 Gaming Case w/ Steel Sides, Micro ATX, 2x Silencio Fans, Sound Dampening, Card Reader, Black

Product SKU: CAM-CMSILENCIOS400
Available:
Only 0 item in stock
0 item in stock
In stock
Pre-order
Out of stock
£90.95
Notify me When Available
You will receive an email when the product is available.
Want it delivered by
  • Description
  • Shipping & Returns



Silence Has A Sequel

  • Silencio Design
  • Silencio Technology
  • Sound Dampening Material
  • Seamless Tempered Glass or Sound-Dampened Steel
  • Top & Front Ventilation
  • Reversible Steel Door
 
 
 
 
Silencio Design

The Silencio’s minimalistic design cloaks its complexity. Design elements fine-tuned in form and function result in minimized noise and efficiently maintained system temperatures.
 



 
Silencio Technology

Behind the outer panels are pieces of meticulously placed sound dampening material. The development of the Silencio was driven by Sorama’s Cam64—this allowed for the entire sound spectrum to be visually analyzed by source, resonance pattern, and frequency.
 
With the identification of peaks within certain frequency ranges, fine-tuning the Silencio for the dispersion of resonance was made possible, reducing the prominence of noise generated by system components. Every detail in design optimized the Silencio for thermal efficiency and silence, from the type of material used to its placement.
 



 
Sound Dampening Material

The Silencio utilizes a combination of sound dampening materials, from thick soft foam to heavy mass-loaded vinyl, to precisely counter prominent frequencies.
 


 
 
Front Ventilation

The front panel features a recurved vent, directing air in through the front bezel. The curve points downward, taking air in from the bottom, and straightens out to direct air in from either side of the steel front door.




 
Top Ventilation

For an even higher demand for ventilation, the top panel’s Sound Dampening Cover can be removed for unrestricted ventilation. An optional dust filter for the top panel ventilation is included, allowing the top panel and front panel work in conjunction to cool the system.
 
 
 
 
 
Reversible Steel Door

The steel front door features a reversible mounting system, capable of opening in either direction. To prevent vibrations, a softer, thicker material spans the steel structure in conjunction with a hinge system of magnets and rubber stompers.



 
 
Silencio Fans

Two Silencio FP 120mm PWM fans are pre-installed with rubber padding to reduce noise, featuring specially designed blades that allow both quiet operation and high air pressure.
 



 
Versatile HDD Cage

The HDD cage is (re)movable. The cage can be shifted forward to make room for a longer PSU, backwards for additional radiator space, or completely removed if HDD storage is not needed.
 
 


 
Cooling Support
 
Top:
120 / 140mm x 1 Fans
120 / 140mm x 2 Fans (remove ODD cage)
120 / 240* Radiator
*remove ODD cage 
 
Front:
120 / 140mm x 2 Fans
120 / 140 / 240 / 280* Radiator
*may interfere with HDD mounted below ODD bracket
 
Rear:
120 x 1 Fan
120 x 1 Radiator
 



 
Storage Support

5.25” ODD x 1 (ODD version)
3.5” HDD x 4
2.5” SSD x 4
 



 
Clearances

CPU Cooler (Steel): 167mm
CPU Cooler (TG): 166mm
 
Power Supply:
325mm (w/o front radiator & HDD cage)
140mm (HDD cage in backmost position)
 
Graphics Card: 319mm
 

Description

Specification

  • Form Factor: Micro ATX
  • #Hide#Small Form Factor: No
  • Power Supply Wattage: No PSU
  • Motherboard Support: "Micro ATX, Mini ITX"
  • #Hide#Window(s): No
  • Connectors / Controls: 2 x USB 3.2 Gen1 Type-A
    1 x 3.5mm Headset Jack (Audio+Mic)
  • #Hide#5.25 Bay: Yes (5.25 Bay)
  • Drive Bays: 1 x 5.25"" Drive Bays
    4 x 3.5"" Drive Bays
    4 x 2.5"" Drive Bays
  • Expansion Slots: 4 Expansion Slots
  • Cooling System: Included:
    Front: 1 x Silencio FP 120mm PWM fan
    Rear: 1 x Silencio FP 120mm PWM fan

    Fan Mounts:
    Front: 2 x 120 / 2 x 140 mm
    Top: 1 x 120 / 140mm OR 2 x 120 / 140 mm (remove ODD cage)
    Rear: 1 x 120 mm
  • .: "
    Radiator Options:
    Front: Up to 280 mm*
    Top: 120 / 240 mm (240mm requires removal of ODD cage)
    Rear: 120 mm

    *Remove & reinstall ODD bracket to mount 280mm radiator, may interfere with HDD mounted below ODD bracket"
  • Colour: Black
  • Material: "Steel, Plastic, Sound Absorbing Material
    Sides: Sound-Dampened Steel"
  • Compatibility: "GPU Clearance:
    319 mm

    CPU Clearance:
    167 mm

    PSU Clearance :
    325mm (w/o front radiator & drive cage)
    140mm (HDD cage in backmost position)
    Bottom Mount, ATX PS2"
  • Weight/Dimensions: (LxWxH) 418 x 210 x 408 mm (Incl. Protrusions)
    (LxWxH) 403.5 x 210 x 400 mm (Excl. Protrusions)
    Volume: 33.9L (Excl. Protrusions)
  • Additional Features: "Sound Dampening Material
    Card Reader: Supports SD & MMC Cards
    Dust Filters: Front, Top, Bottom
    Top & Front Ventilation
    Reversible Steel Door
    Dust Filters: Front, Top, Bottom
    Optional dust filter for top panel ventilation is included

    See Overview for more details"
  • Package Weight: 8.2000 kg
  • Warranty: 2 Years

Delivery & Shipping Policy

Last updated: 19/09/2025

At Tech Direct UK, we aim to get your order to you as quickly and efficiently as possible. Please see below for our delivery terms.

1. Delivery Options & Costs

  • Free Delivery – Orders over £50 qualify for free UK standard delivery.

  • Standard Delivery – Orders under £50 are charged at £4.99.

2. Delivery Times

  • Next Day Delivery – The majority of items are shipped via next day courier if ordered before 2:00pm (Monday–Friday).

  • Orders placed after 2:00pm, on weekends, or bank holidays will be processed the next working day.

  • Larger or Heavy Items – Certain products (e.g., heavy furniture, oversized goods) may take 2–5 working days for delivery. Estimated times will be displayed at checkout.

3. Delivery Areas

  • We deliver to all mainland UK addresses.

  • Deliveries to remote areas (e.g., Highlands, Islands, Northern Ireland) may take longer or incur additional charges — these will be shown at checkout before confirming your order.

4. Tracking Your Order

  • Once dispatched, you will receive an email confirmation with tracking details (where available).

  • You can track your delivery via the courier’s website.

5. Missed Deliveries

  • If you are not available at the time of delivery, the courier will leave a card or attempt redelivery.

  • Repeated failed delivery attempts may result in the parcel being returned to us. In this case, re-delivery charges may apply.

6. Risk of Loss

  • Risk of loss or damage to the goods passes to you once they are delivered.

  • Please inspect your order upon receipt and notify us of any issues within 48 hours.

7. Contact Us

If you have any questions about delivery, please contact us:
📧 Email: support@techdirectuk.com

Related products

CORSAIR

Corsair NAUTILUS RS LCD Module, Customisable 2.1" IPS LCD Screen, iCUE, White *For Corsair NAUTILUS RS & NAUTILUS RS ARGB CPU Coolers Only*

Corsair NAUTILUS RS LCD Module, Customisable 2.1
£57.35
CORSAIR

Corsair NAUTILUS RS LCD Module, Customisable 2.1" IPS LCD Screen, iCUE, Black *For Corsair NAUTILUS RS & NAUTILUS RS ARGB CPU Coolers Only*

Corsair NAUTILUS RS LCD Module, Customisable 2.1
Sold out
ARCTIC

ARCTIC 80mm Fan Grill, Nickel Plated Steel

ARCTIC 80mm Fan Grill, Nickel Plated Steel
Sold out
ARCTIC

ARCTIC 40mm Fan Grill, Nickel Plated Steel

ARCTIC 40mm Fan Grill, Nickel Plated Steel
Sold out
AKASA

Akasa Black Rubber Case Fan Pins, Anti-Vibration & Resonance, 60-Pack

Akasa Black Rubber Case Fan Pins, Anti-Vibration & Resonance, 60-Pack
Sold out
Product successfully added to your Shopping Cart
Continue shopping View cart
Light
Dark