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

**URL:** https://aio.lv/en/product--blueoptics-qsfp-40g-esr4-al-bo--6185035
**Data updated:** 2026-03-07 15:15 (EET)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP-40G-ESR4-AL-BO
**EAN:** 4063232074948
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 119.49 €
**Prices and availability valid until:** 2026-08-27 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-al-bo--6185035

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 25.08.2026 | free |
| Pickup points | 28.08.2026 | 1.79 EUR |
| Courier delivery to door | 28.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QSFP-40G-ESR4-AL-BO is a fiber optic transceiver module designed for high-speed data transfer with a maximum rate of 40 Mbit/s. It operates at a wavelength of 850 nm and is compatible with QSFP interfaces. 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, making it suitable for various networking applications.

## Long description

The BlueOptics QSFP-40G-ESR4-AL-BO is a QSFP fiber optic transceiver module intended for 40 Gigabit Ethernet applications. It operates at an 850 nm wavelength and supports a maximum data transfer rate of 40 Mbit/s over multimode fiber using an MTP/MPO connector. The module is compact and lightweight (approx. 40 g) and is built to meet MSA QSFP form-factor standards. With an MTBF of around 1,000,000 hours and compliance with common industrial standards, it is designed for continuous operation in networking environments that accept QSFP-40G-ESR4 form-factor modules.
Advantages
This BlueOptics QSFP transceiver provides compatibility with QSFP interfaces and supports bidirectional optical transmission via MPO/MTP connectors on multimode fiber. The module offers a defined maximum transfer distance of up to 300 m at 850 nm and is specified for 40 Mbit/s operation. Built to MSA mechanical and electrical standards and assembled from quality components, it includes digital diagnostics functionality for remote monitoring when the host hardware supports DDM/DOM. The compact weight and standardized form factor simplify installation and replacement in compatible network equipment.
Suitable for
40 Gigabit Ethernet links over multimode fiber in data center aggregation or server racks
Short-reach connections between switches, routers and storage systems (up to 300 m)
Environments where MTP/MPO backbone cabling is deployed
Key specifications
Optical wavelength: 850 nm
Maximum data transfer rate: 40 Mbit/s
Maximum transmission distance: up to 300 m (multimode fiber)
Interface type: QSFP (40 Gigabit Ethernet)
Fiber connector: MTP/MPO
Typical weight: 0.04 kg
Mean time between failures (MTBF): approx. 1,000,000 hours
How to use
Install the QSFP-40G-ESR4-AL-BO into a compatible QSFP port on a switch, router or other networking device that supports QSFP-40G-ESR4-style modules. Use an appropriate MTP/MPO multimode fiber patch cord or structured cabling to connect the transceiver to the remote transceiver or patch panel. Ensure the host device firmware and hardware support the module and enable digital diagnostics (DDM/DOM) if remote monitoring of parameters such as temperature, optical power and supply voltage is required. Handle the transceiver using proper ESD precautions and keep protective caps on the connector when not in use.
Usage recommendations
For optimal performance, match the multimode fiber type and patch-cord polarity recommended for 40GBASE-ESR4 links, verify link budgets for the intended distances (up to 300 m), and confirm that the host hardware supports DDM/DOM features before deployment. Store and operate the module within the manufacturer’s specified environmental ranges and follow ESD-safe handling procedures.

## 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 | MTP/MPO |

### Performance

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 1000000 h |
| Rx wavelength (max) | 850 nm |
| Tx 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 BlueOptics QSFP-40G-ESR4-AL-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 25.08.2026 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/6185035/54616568_large.webp