# Case Fan Gelid Silent 4 40 mm, 12 V, up to 4200 RPM, 1.5 mmH2O (black/white)

**URL:** https://aio.lv/en/product--gelid-fn-sx04-42--11892773
**Data updated:** 2026-03-10 00:11 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Gelid
**Manufacturer code:** FN-SX04-42
**EAN:** 4897025780705
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-08-02 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--gelid-fn-sx04-42--11892773

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

Gelid Silent 4 is a 40 mm computer case fan designed for compact cooling applications. It operates at 12 V with a maximum speed of 4200 RPM and a maximum air pressure of 1.5 mmH2O. Available in black or white, the fan suits tight spaces, small form-factor cases, heatsink or chipset cooling and targeted spot ventilation.

## Long description

Gelid Silent 4 is a compact 40 mm case fan engineered for cooling in limited spaces. Operating at 12 V and reaching up to 4200 RPM with a maximum static pressure of 1.5 mmH2O, this fan is available in black or white and is intended for targeted spot ventilation, small form-factor systems, heatsink or chipset cooling where space is constrained.
Advantages
The fan delivers high rotational speed and elevated static pressure while maintaining low acoustic output thanks to optimized fan blade geometry and precise balance. A Hydro Dynamic bearing ensures extended operational life up to the specified mean time to failure, enabling reliable continuous use in compact environments. Its small dimensions and lightweight construction allow installation in narrow mounting points without significant impact on surrounding components.
Suitable for
 Small form-factor PC cases and mini-ITX builds
 Spot cooling for chipset, VRM or MOSFET areas
 Cooling of compact heatsinks and third-party adapters
 Active airflow in external enclosures, NAS units or embedded systems
Key specifications
 Fan diameter: 40 mm
 Operating voltage: 12 V
 Maximum speed: up to 4200 RPM
 Maximum static pressure: 1.5 mmH2O
 Acoustic level: approximately 18.9 dB (manufacturer specification)
 Airflow: approximately 7.65 cfm (manufacturer specification)
 Dimensions (L×W×H): 40 × 40 × 10 mm
 Weight: approximately 16 g
 Available colours: black, white
 Bearing type: Hydro Dynamic bearing with long lifetime rating
How to use
Install the Gelid Silent 4 in the intended mounting location using appropriate screws or clips for 40 mm fans, ensuring correct airflow orientation for the required cooling direction. Connect the fan to a 12 V compatible header or power source; observe polarity and, if applicable, secure the cable to prevent interference with other components. For PWM or voltage-controlled setups, verify compatibility with the system controller before applying variable fan control.
Usage recommendations
Use the fan where compact size and targeted airflow are needed. For optimal performance, maintain clear intake and exhaust paths, avoid obstructing the impeller, and periodically clean dust from the blades. When planning multiple fans in tight spaces, account for cumulative airflow and acoustic levels; consider using this model for spot cooling rather than primary case airflow in larger systems.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Type | Fan |
| Fan diameter | 40 mm |
| Noise level (high speed) | 18.9 dB |
| Rotational speed (max) | 4200 RPM |
| Maximum airflow | 7.65 cfm |
| Minimum airflow (imperial) | 4.5 cfm |
| Mean time between failures (MTBF) | 50000 h |
| Maximum air pressure | 1.5 mmH2O |
| Suitable location | Computer case |

### Design

| Feature | Value |
|---|---|
| Product colour | Black, White |
| Certification | CE |
| Fan connector | 3-pin |

### Weight & dimensions

| Feature | Value |
|---|---|
| Cable length | 0.45 m |
| Fan weight | 16 g |
| Fan dimensions (W x D x H) | 40 x 40 x 10 |

### Technical details

| Feature | Value |
|---|---|
| Compliance certificates | RoHS |

### Power

| Feature | Value |
|---|---|
| Rated current | 0.1 A |
| Voltage | 12 |

### Packaging content

| Feature | Value |
|---|---|
| Screws included | Yes |

## FAQ

### How much does the Gelid Silent 4 40 mm case fan cost, and is it available for purchase?

The price is 8.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 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 20.07.2026 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. All transactions are 100% secure and encrypted.

### 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 Gelid 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 Gelid 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, fan diameter, 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/11892773/67411036_large.webp