# Fiber optic transceiver module BlueOptics ET7402-CWDM4-BO QSFP28 LC

**URL:** https://aio.lv/en/product--blueoptics-et7402-cwdm4-bo--5039761
**Data updated:** 2026-02-25 16:37 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** ET7402-CWDM4-BO
**EAN:** 4063232238630
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 301.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 249.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-et7402-cwdm4-bo--5039761

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

The BlueOptics ET7402-CWDM4-BO is a fiber optic QSFP28 transceiver module designed for high-speed data transmission. It features an LC connector and is made of durable aluminum, weighing 40 g. This module is ideal for data centers and high-performance networks, ensuring reliable connectivity and efficient data transfer.

## Long description

The BlueOptics ET7402-CWDM4-BO QSFP28 LC is a fiber optic transceiver module designed for high-speed 100G data transmission over single-mode fiber. Housed in an aluminium enclosure and weighing approximately 40 g, the module uses a QSFP28 interface with an LC duplex connector and follows MSA-compatible form factor standards. It supports CWDM4 wavelength multiplexing to transmit and receive optical signals concurrently, enabling reliable connectivity for data centers and high-performance network equipment.
Advantages
This module provides compatibility with hardware platforms that support the 100GBASE-CWDM4 QSFP28 standard and is produced according to common MSA specifications. The use of CWDM4 technology allows four wavelength channels to be carried over single-mode fiber, providing a compact high-bandwidth solution. The aluminium housing offers physical durability while the QSFP28 form factor supports high-density port deployment in switches and routers. The module is suitable for Ethernet and other high-speed protocols up to 100 Gbit/s across short to medium single-mode fiber links.
Suitable for
100G data center interconnects and aggregation links
High-performance switches and router uplinks supporting QSFP28
Storage area network and Fibre Channel over Ethernet applications
Environments requiring LC duplex single-mode fiber connections
Key specifications
Interface type: QSFP28
Connector: LC duplex (single-mode fiber)
Protocol support: 100GBASE-CWDM4 (suitable for Ethernet and comparable high-speed protocols)
Wavelength multiplexing: CWDM4 (four coarse wavelengths)
Housing material: aluminium
Weight: approx. 0.04 kg
Typical reach: up to around 2 km on single-mode fiber (dependent on link conditions)
How to use
Install the QSFP28 transceiver into a compatible QSFP28 port on a switch, router or compatible network device following the device manufacturer’s handling instructions. Connect LC duplex single-mode fiber patch cords to the module’s LC connector, ensuring correct TX/RX orientation. Configure the host device for 100G operation and, if required, verify link parameters and firmware compatibility with the system BIOS or operating software. Observe electrostatic discharge precautions during handling and avoid mechanical stress on the connector and fiber.
Usage recommendations
For optimal performance, use high-quality single-mode LC patch cords and route fibers via appropriate panels or management to minimize bend radius and signal loss. Confirm device compatibility and test the transceiver in a controlled environment before large-scale deployment. Regularly inspect connectors for contamination and clean with approved fiber cleaning tools when necessary.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | QSFP28 |
| Ethernet interface type | 100 Gigabit Ethernet |
| Ethernet LAN | Yes |
| Fiber optic connector | LC |
| Maximum transfer distance | 2000 m |
| SFP transceiver standard | CWDM |
| Coarse Wavelength Division Multiplexing (CWDM) | Yes |

### Network

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

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.04 kg |

### Packaging content

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

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 50 g |

### Logistics data

| Feature | Value |
|---|---|
| Warranty period | 5 year(s) |

### Operational conditions

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

### Features

| Feature | Value |
|---|---|
| Product colour | Aluminium |

## FAQ

### How much does the Fiber optic transceiver BlueOptics ET7402-CWDM4-BO cost, and is it available for purchase?

The price is 301.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 400 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 24.07.2026 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, weight, 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/5039761/64342725_large.webp