# QSFP Transceiver Module BlueOptics QSFP-40G-ESR4-CO-BO 40 Mbit/s 850 nm

**URL:** https://aio.lv/en/product--blueoptics-qsfp-40g-esr4-co-bo--6185026
**Data updated:** 2026-03-07 15:15 (EET)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP-40G-ESR4-CO-BO
**EAN:** 4063232074863
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 119.49 €
**Prices and availability valid until:** 2026-08-28 23:59
**Price without VAT (21%):** 98.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp-40g-esr4-co-bo--6185026

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.08.2026 | free |
| Pickup points | 31.08.2026 | 1.79 EUR |
| Courier delivery to door | 31.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QSFP-40G-ESR4-CO-BO is a fiber optic transceiver module designed for high-speed data transfer. It supports a maximum data rate of 40 Mbit/s and operates at a wavelength of 850 nm. The metal housing ensures durability, while the MTBF of 1,000,000 hours indicates reliability. Weighing only 40 g, it is lightweight and easy to integrate into various networking applications.

## Long description

The BlueOptics QSFP-40G-ESR4-CO-BO is a QSFP transceiver module for 40 Gigabit Ethernet applications using multimode fiber. It operates at a wavelength of 850 nm, supports a maximum data rate of 40 Mbit/s and a maximum transmission distance of up to 300 m over suitable multimode fiber. The module is housed in metal for mechanical durability and has an MTBF of 1,000,000 hours. It uses an MPO/MTP fiber connector and weighs approximately 40 g, making it compact and straightforward to install in compatible QSFP ports.
Advantages
The module conforms to QSFP MSA specifications and is designed for interoperability with hardware platforms that support 40GBASE-ESR4 transceivers. Metal housing provides mechanical protection and thermal stability while lightweight construction simplifies handling and installation. Built-in digital diagnostics (DDM/DOM) allow real-time monitoring of supply voltage, laser bias current, optical output and input power, and temperature when supported by the host hardware. The module is suitable for high-availability environments thanks to component selection and an extended MTBF.
Suitable for
40 Gigabit Ethernet links in data center switches and routers
High-speed server interconnects and storage area networks
Short-reach multimode fiber links up to 300 m
Environments requiring remote optical diagnostics and monitoring
Key specifications
Form factor: QSFP
Data rate: up to 40 Mbit/s
Wavelength: 850 nm
Maximum reach over multimode fiber: 300 m
Connector type: MPO / MTP
Interface: 40 Gigabit Ethernet
Housing: metal
Weight: approx. 0.04 kg
Digital diagnostics: DDM/DOM (subject to host support)
MTBF: 1,000,000 hours
How to use
Install the transceiver into a compatible QSFP port according to the equipment vendor's instructions, ensuring the host device supports 40GBASE-ESR4 modules and the DDM/DOM function if diagnostic data is required. Connect an MPO/MTP multimode fiber patch cord to the transceiver and route the cable to the corresponding port or patch panel. Verify link state and monitor diagnostic parameters through the host system to confirm correct operation. Handle the module by the edges and keep protective caps on the fiber connector when not in use to avoid contamination.
Usage recommendations
Use OM3 or OM4 multimode fiber for optimal reach and performance up to the specified 300 m. Ensure proper cleaning of MPO/MTP connectors before installation and confirm host compatibility with 40GBASE-ESR4 optics and digital monitoring features. For redundancy and high-availability deployments, plan link aggregation or redundant paths and monitor the transceiver's diagnostic parameters regularly.

## Specifications

| Feature | Value |
|---|---|
| Interface type | QSFP |
| Ethernet LAN | Yes |
| Number of products included | 1 pc(s) |
| SFP transceiver type | Fiber optic |
| Multi-mode fiber (MMF) supported | Yes |

### Packaging data

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

### Packaging content

| Feature | Value |
|---|---|
| Manual | Yes |

### Operational conditions

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

### Weight & dimensions

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

### Ports & interfaces

| Feature | Value |
|---|---|
| Fiber optic connector | MPO, MTP |

### Features

| Feature | Value |
|---|---|
| Housing material | Metal |

### Performance

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 1000000 h |
| Rx wavelength (max) | 850 nm |
| Wavelength | 850 nm |
| Maximum transfer distance | 300 m |

### Network

| Feature | Value |
|---|---|
| Ethernet interface type | 40 Gigabit Ethernet |
| Maximum data transfer rate | 40 Mbit/s |

## FAQ

### How much does the QSFP Transceiver Module BlueOptics QSFP-40G-ESR4-CO-BO cost, and is it available for purchase?

The price is 119.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 86 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 26.08.2026 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: wavelength, maximum transfer distance, maximum data transfer rate, fiber optic connector, 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/6185026/54616390_large.webp