# Fiber optic transceiver module BlueOptics QSFP-40G-ESR4-BR-BO 40 Mbit/s 850 nm

**URL:** https://aio.lv/en/product--blueoptics-qsfp-40g-esr4-br-bo--6185030
**Data updated:** 2026-03-07 15:15 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP-40G-ESR4-BR-BO
**EAN:** 4063232074900
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 119.49 €
**Prices and availability valid until:** 2026-08-24 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-br-bo--6185030

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.08.2026 | free |
| Pickup points | 27.08.2026 | 1.79 EUR |
| Courier delivery to door | 27.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QSFP-40G-ESR4-BR-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. With a mean time between failures (MTBF) of 1,000,000 hours, it ensures reliability and longevity. Weighing only 40 g, it is lightweight and easy to install. Ideal for networking applications requiring efficient data transmission.

## Long description

The BlueOptics QSFP-40G-ESR4-BR-BO is a QSFP fiber optic transceiver module designed for 40 Mbit/s multimode optical links using 850 nm wavelength. Built to MSA QSFP form-factor specifications, the module provides a compact MPO/MTP interface for simultaneous transmit and receive over multi-mode fiber. The transceiver features digital diagnostic monitoring (DDM/DOM) support for real-time reporting of supply voltage, laser bias current, transmit power, receive power and temperature, and is specified with a mean time between failures (MTBF) of 1,000,000 hours. Weighing 40 g, it is lightweight and suitable for hot-swap installation in compatible network equipment.
Advantages
The module supports standardized QSFP connectivity and MPO/MTP termination for dense optical deployments, offering interoperability with systems that accept QSFP MSA-compliant transceivers. Integrated DDM/DOM simplifies remote monitoring and fault analysis. Compliance with recognized industrial standards and the use of high-quality optical components contribute to extended operational lifetime and high availability in data center and enterprise environments.
Suitable for
40 Mbit/s multimode fiber links in data center aggregation and spine-leaf networks
High-density switch, router and storage interfaces requiring QSFP modules
Environments that require remote optical diagnostics and continuous monitoring
Short-reach connections up to the validated multimode distance using 850 nm optics
Key specifications
Interface type: QSFP (MPO/MTP connector)
Wavelength: 850 nm
Maximum data transfer rate: 40 Mbit/s
Fiber type: Multi-mode fiber (MMF)
Digital diagnostics: DDM/DOM (real-time supply voltage, bias current, TX/RX power, temperature)
Mean time between failures (MTBF): 1,000,000 hours
Weight: 0.04 kg
How to use
Insert the QSFP module into a compatible QSFP port on a switch, router or storage appliance while the host is powered according to the equipment vendor’s hot-swap guidelines. Connect an MPO/MTP multimode fiber patch cord to the module’s connector, ensuring correct polarity and proper fiber type for 850 nm operation. If supported by the host, enable DDM/DOM monitoring through the device management interface to view real-time optical parameters and facilitate troubleshooting. Follow the network equipment vendor’s instructions for firmware and compatibility when deploying third‑party transceivers.
Usage recommendations
Use high-quality multimode fiber patch cords and compatible MPO/MTP adapters or patch panels to achieve optimal link performance. Verify the host platform supports QSFP MSA-compliant transceivers and DDM/DOM features if remote diagnostics are required. Perform end-to-end power budget and connector cleanliness checks during installation and periodic maintenance to maintain signal integrity.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | QSFP |
| Maximum data transfer rate | 40 Mbit/s |
| Ethernet interface type | 40 Gigabit Ethernet |
| Ethernet LAN | Yes |
| Wavelength | 850 nm |
| Fiber optic connector | MTP/MPO |
| Maximum transfer distance | 300 m |
| Rx wavelength (max) | 850 nm |
| Tx wavelength (min) | 8 nm |
| Tx wavelength (max) | 850 nm |
| Multi-mode fiber (MMF) supported | Yes |

### Network

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

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 50 g |
| Number of products included | 1 pc(s) |

### Operational conditions

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

### Packaging content

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

### Weight & dimensions

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

### Features

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 1000000 h |

## FAQ

### How much does the Fiber optic transceiver BlueOptics QSFP-40G-ESR4-BR-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 24.08.2026 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: interface type, maximum data transfer rate, weight, 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/6185030/54616463_large.webp