# Fan speed controller Gelid FC‑MC01B‑B — 12V input, 5V output, 700mA, black

**URL:** https://aio.lv/en/product--gelid-fc-mc01b-b--1014219
**Data updated:** 2026-03-07 10:57 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Gelid
**Manufacturer code:** FC-MC01B-B
**EAN:** 4897025780163
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--gelid-fc-mc01b-b--1014219

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

Gelid Fan Speed Control FC‑MC01B‑B is a compact fan speed controller with 12 V input and regulated 5 V output rated at 700 mA. Housed in a black enclosure (62 × 19 × 25 mm), it provides a simple way to reduce fan RPM and noise for PC or electronics cooling. Suited for single 3– or 4‑pin fans requiring a 5 V feed and under 700 mA load.

## Long description

Gelid FC‑MC01B‑B is a compact fan speed controller designed to reduce fan RPM and acoustic noise by providing a stable 5 V output from a 12 V input. The unit is housed in a black enclosure measuring 62 × 19 × 25 mm and is rated to supply up to 700 mA, making it suitable for a single 3‑pin or 4‑pin fan that accepts a 5 V feed. The device provides a simple hardware solution to lower cooling fan speed when full voltage is not required, helping to balance airflow and noise in PC cases or other electronics cooling applications.
Advantages
The controller offers a straightforward means to decrease fan speed without modifying motherboard settings or firmware. Its fixed 5 V regulated output delivers consistent reduced RPM under varying input conditions. The small, black enclosure is space‑efficient and easy to integrate into tight spaces inside computer cases or equipment racks. Rated current protection up to 700 mA ensures compatibility with many single fans used in consumer PCs and electronics cooling.
Suitable for
 Reducing noise from a single 3‑pin or 4‑pin case fan that accepts a 5 V supply
 Lowering RPM of fans in compact PC builds or HTPCs
 Quieting fans in small electronics enclosures or network equipment
 Testing fan behaviour at reduced voltage for diagnostics
Key specifications
 Input voltage: 12 V DC
 Output voltage: regulated 5 V DC
 Maximum output current: 700 mA
 Supported fan types: single 3‑pin or 4‑pin fans that accept a 5 V feed
 Enclosure colour and dimensions: black, 62 × 19 × 25 mm
How to use
Connect the controller between the 12 V supply and the fan’s power lead so the fan receives the regulated 5 V output. Ensure the fan’s current draw does not exceed 700 mA. The unit provides a fixed reduced voltage output; no software configuration is required. For 4‑pin fans, leave the PWM control pin connected to the motherboard or controller as needed, but power should be routed through the FC‑MC01B‑B to obtain the lowered supply voltage.
Usage recommendations
Verify fan specifications and measure current draw before installation. Use the controller only with fans that operate reliably at 5 V and within the 700 mA limit. Avoid exceeding the rated current to prevent overheating. Install the unit in a location with adequate airflow and secure connections to prevent accidental disconnection during operation.

## Specifications

| Feature | Value |
|---|---|
| Input voltage | 12 |
| Output current | 700 mA |
| Rated power | 12 W |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |

### Other features

| Feature | Value |
|---|---|
| Dimensions (WxDxH) | 62 x 19 x 25 |
| Output voltage | 5 |

## FAQ

### How much does the Gelid Fan Speed Controller FC‑MC01B‑B 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 — 12 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 21.07.2026 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: 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/1014219/57842000_large.webp