# PC Case Cooler Master Silencio S400 Midi Tower Black

**URL:** https://aio.lv/en/product--cooler-master-mcs-s400-kn5n-s00--2086833
**Data updated:** 2025-12-20 11:11 (EET)
**Category:** Computer Cases
**Manufacturer:** Cooler Master
**Manufacturer code:** MCS-S400-KN5N-S00
**EAN:** 4719512087381
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 91.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 75.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cooler-master-mcs-s400-kn5n-s00--2086833

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 8.41 EUR |

## Summary description

The Cooler Master Silencio S400 is a Midi Tower PC case designed for optimal airflow and quiet operation. It features a sleek black design, bottom-mounted power supply, and supports ATX and PS2 power supply form factors. The case includes one pre-installed 120 mm front fan and supports additional fans with diameters of 120 and 140 mm. It accommodates various HDD sizes (2.5, 3.5, 5.25 inches) and is compatible with MMC and SD memory cards. Dimensions: 210 mm (W) x 418 mm (D) x 408 mm (H).

## Long description

The Cooler Master Silencio S400 is a Midi Tower PC case designed for quiet operation without sacrificing thermal performance. It comes in black with options for a tempered glass side panel or a sound-dampened steel side panel, supports Mini-ITX and Micro ATX motherboards, and accommodates multiple drive sizes. Sound-dampening material lines the case, fans are rubber-padded, and a removable top sound dampening cover allows increased ventilation when needed.
Advantages
The Silencio S400 combines noise reduction and airflow flexibility: sound-dampening material minimizes noise from fans, the power supply and steel panels while maintaining effective intake through a ventilated front door with a mesh filter. A reversible sound-dampened steel front door, configurable HDD cage and pre-installed Silencio 120 mm PWM fans with rubber padding increase usability. The I/O panel includes an SD card reader and a single 4-pole headset jack for combined audio and microphone use.
Suitable for
Quiet office or home PC builds where low noise is a priority
Mid-range systems using Mini-ITX or Micro ATX motherboards
Builds requiring flexible storage and radiator placement
Key specifications
Form factor: Midi Tower
Supported motherboard sizes: Mini-ITX, Micro ATX
Drive bays: 4 × 3.5", 4 × 2.5", 1 × 5.25"
Pre-installed fans: 2 × 120 mm Silencio FP PWM (rubber-padded)
Front I/O: 2 × USB 3.2 Gen 1 Type-A, SD card reader, 1 × 4-pole headset jack
Side panel options: Tempered glass or sound-dampened steel
Materials: Steel, plastic
Dimensions (W×D×H): 210 × 418 × 408 mm
Weight: 7.03 kg
Colour: Black
How to use
Install the compatible Mini-ITX or Micro ATX motherboard and position storage drives in the HDD cage, which can be moved forward for extra PSU clearance, moved backward for additional front radiator space, or removed entirely if not needed. Use the reversible front door to orient airflow as required. Keep the top sound dampening cover installed for quieter operation, or remove it to increase ventilation for high-demand systems. Connect additional fans using the included 4-pin 1-to-3 splitter if needed.
Usage recommendations
For a balance of silence and cooling, keep the sound-dampened front door and top cover in place during normal operation and remove the top cover only when additional airflow is necessary; regularly clean the front mesh filter to maintain efficient intake.

## Specifications

### Design

| Feature | Value |
|---|---|
| Type | PC |
| Form factor | Midi Tower |
| Supported motherboard form factors | Mini-ITX, Micro ATX |
| Number of 3.5" bays | 4 |
| Number of 2.5" bays | 4 |
| Number of 5.25" bays | 1 |
| Side window | No |
| Material | Steel, Plastic |
| Product colour | Black |
| Anti-dust filter | Yes |
| Maximum CPU cooler height | 167 mm |
| Maximum graphics card length | 319 mm |
| Number of expansion slots | 4 |
| Maximum PSU length | 325 mm |
| Cable management | Yes |
| Reset button | Yes |
| On/off button | Yes |

### Power supply

| Feature | Value |
|---|---|
| Power supply included | No |
| Power supply location | Bottom |
| Supported power supply form factors | ATX, PS2 |

### Ports & interfaces

| Feature | Value |
|---|---|
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| Audio input | Yes |
| Audio output | Yes |

### Cooling

| Feature | Value |
|---|---|
| Fan speed | 800 - 1400 |
| Front fans installed | 1x 120 mm |
| Number of front fans supported (max) | 2 |
| Front fans diameters supported | 140, 120 |
| Rear fans diameters supported | 120 |
| Top fans diameters supported | 140, 120 |
| Number of rear fans supported (max) | 1 |
| Number of top fans supported (max) | 2 |
| Rear fans installed | 1x 120 mm |
| Liquid cooling capability | Yes |
| Rear radiator sizes supported | 120 |
| Front radiator sizes supported | 240, 140, 120 |
| Top radiator sizes supported | 240, 120 |

### Storage

| Feature | Value |
|---|---|
| Compatible memory cards | SD, MMC |
| Card reader integrated | Yes |
| Supported HDD sizes | 5.25, 2.5, 3.5 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 7.03 kg |
| Height | 408 mm |
| Width | 210 mm |
| Depth | 418 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 8060 g |
| Package depth | 480 mm |
| Package height | 480 mm |
| Package width | 278 mm |

### Other features

| Feature | Value |
|---|---|
| Volume | 33.9 L |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84733080 |

## FAQ

### How much does the PC Case Cooler Master Silencio S400 cost, and is it available for purchase?

The price is 91.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 551 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 09.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can PC Case Cooler Master Silencio S400 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Cooler Master products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Cooler Master service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: type, form factor, number of 3.5" bays, number of 2.5" bays, number of 5.25" bays, side window, power supply included, usb 2.0 ports quantity, usb 3.2 gen 1 (3.1 gen 1) type-a ports quantity, weight, supported motherboard form factors, material, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/2086833/64917496_large.webp