# Fiber optic transceiver BlueOptics ET4202-SX 1250 Mbit/s SFP 850 nm

**URL:** https://aio.lv/en/product--blueoptics-et4202-sx-bo--4470771
**Data updated:** 2026-02-25 16:35 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** ET4202-SX-BO
**EAN:** 4063232624594
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 29.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-et4202-sx-bo--4470771

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The BlueOptics ET4202-SX is a fiber optic SFP transceiver module with a maximum data transfer rate of 1250 Mbit/s and operates at a wavelength of 850 nm. It is designed for high-speed data transmission in networking applications, ensuring reliable connectivity and performance.

## Long description

The BlueOptics ET4202-SX 1250 Mbit/s SFP 850 nm is a compact fiber optic transceiver module designed for short-range multimode fiber links. It supports a maximum data transfer rate of 1250 Mbit/s and uses an 850 nm wavelength, making it suitable for Gigabit Ethernet and similar network environments that require reliable, plug-and-play optical connectivity. The SFP form factor ensures compatibility with a wide range of switches, routers and network devices that accept small form-factor pluggable modules.
Advantages
The module provides stable optical transmission at 850 nm with a standardized SFP interface, enabling easy installation and hot-swap capability. Its compact size conserves space in network equipment and its support for 1250 Mbit/s ensures compatibility with many legacy and modern network deployments. The design focuses on consistent signal quality and interoperability with multimode fiber infrastructure.
Suitable for
 Short-range multimode fiber connections within data centers or server rooms
 Gigabit Ethernet links and network uplinks
 Switch-to-switch or switch-to-server optical connections
 Replacing or upgrading existing SFP optical ports
Key specifications
 Form factor: SFP (small form-factor pluggable)
 Wavelength: 850 nm
 Maximum data transfer rate: 1250 Mbit/s
 Fiber type: multimode fiber (MMF)
 Typical application: short-range optical links
How to use
Install the BlueOptics ET4202-SX into an available SFP slot on a compatible network device while the device is powered on or off according to the device manufacturer’s guidance. Connect the module to multimode fiber cables fitted with the appropriate connectors, ensuring correct polarity and secure connections. After insertion, verify link status on the host device and configure interface settings such as speed and duplex if required by the network equipment.
Usage recommendations
Use this transceiver for short-distance multimode applications and ensure fiber type and connector compatibility before deployment. Observe electrostatic discharge precautions during handling and confirm that the network device firmware supports third-party SFP modules for optimal interoperability.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP |
| Maximum data transfer rate | 1250 Mbit/s |
| Ethernet interface type | Gigabit Ethernet |
| Fiber ethernet cabling technology | 1000BASE |
| Duplex system | Full |
| Ethernet LAN | Yes |
| Wavelength | 850 nm |
| Fiber optic connector | LC |
| Maximum transfer distance | 550 m |
| Rx wavelength (max) | 850 nm |
| Tx wavelength (max) | 850 nm |
| Multi-mode fiber (MMF) supported | Yes |

### Network

| Feature | Value |
|---|---|
| SFP transceiver type | Fiber optic |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 70 |

## FAQ

### How much does the Fiber optic transceiver BlueOptics ET4202-SX cost, and is it available for purchase?

The price is 35.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1786 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 23.07.2026 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. 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 BlueOptics 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 BlueOptics 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: interface type, maximum data transfer rate, 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/4470771/64300848_large.webp