# Fiber optic transceiver module BlueOptics QFX-QSFP-40GE-ESR4-BO 40000 Mbit/s 850 nm

**URL:** https://aio.lv/en/product--blueoptics-qfx-qsfp-40ge-esr4-bo--6185040
**Data updated:** 2026-03-07 15:15 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QFX-QSFP-40GE-ESR4-BO
**EAN:** 4063232028637
**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-qfx-qsfp-40ge-esr4-bo--6185040

## 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 QFX-QSFP-40GE-ESR4-BO is a fiber optic transceiver module designed for high-speed data transfer at 40000 Mbit/s. It operates at a wavelength of 850 nm and features a QSFP interface. With a mean time between failures (MTBF) of 3000000 hours, it ensures reliability and longevity. The module weighs 40 g and comes in a silver color, making it a robust choice for networking applications.

## Long description

The BlueOptics QFX-QSFP-40GE-ESR4-BO is a QSFP fiber optic transceiver module designed for 40 Gbit/s optical links over multimode fiber at a center wavelength of 850 nm. The module features an MPO/MTP connection according to MSA standards and provides simultaneous transmit and receive channels in a compact QSFP form factor. Constructed from high-quality components and tested for use in common networking platforms, it is intended as a compatible alternative for systems that support the corresponding 40GBASE-ESR4 MPO/MTP QSFP module.
Advantages
The transceiver supports a maximum data transfer rate of 40000 Mbit/s and is manufactured to MSA-compatible mechanical and optical specifications to ensure interoperability with network switches, routers and storage systems. It includes Digital Diagnostics Monitoring (DDM/DOM) for real-time monitoring of optical power, supply voltage, laser bias current and temperature, and it is assembled from selected optical and electronic components to provide extended service life and reliability. Its compact QSFP housing and MPO/MTP interface enable high-density, low-latency connections in data centre and enterprise environments.
Suitable for
40 Gigabit Ethernet links over multimode fiber in data centres
High-speed switch-to-switch and switch-to-server interconnects
Storage area network (SAN) backbones and aggregation links
System upgrades where MSA-compliant QSFP MPO/MTP transceivers are required
Key specifications
Interface type: QSFP (MPO/MTP connector)
Maximum data transfer rate: 40000 Mbit/s (40 Gbit/s)
Optical wavelength: 850 nm for transmit and receive
Compatible fiber: Multimode fiber (MMF)
Form factor: QSFP (hot-pluggable)
Color and weight: silver housing, approx. 0.04 kg
Digital Diagnostics: DDM/DOM (real-time monitoring of voltage, current, optical power, temperature)
MSA-compliant mechanical and electrical design for broad hardware compatibility
How to use
Install the BlueOptics QSFP transceiver into a compatible QSFP port on a switch, router or other networking device while the host device is powered down or following the vendor’s hot‑swap instructions. Connect an MPO/MTP multimode fiber patch cable to the transceiver and route the cable to the matching MPO/MTP end or patch panel. After installation, verify link status on the host device and, if supported, consult the DDM/DOM readings to confirm optical power levels and operating temperature. Follow the system vendor’s guidelines for firmware or compatibility settings when integrating into vendor-branded platforms.
Usage recommendations
Use quality multimode MPO/MTP patch cables and adhere to recommended connector cleaning procedures to maintain signal integrity. Ensure that the host device supports DDM/DOM if you require remote diagnostics. For best performance, match the transceiver to multimode fiber types (OM3/OM4) appropriate for 40GBASE-ESR4 links and observe bend-radius and routing best practices in cabling infrastructure.

## Specifications

### Logistics data

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

### Packaging data

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

### Weight & dimensions

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

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 70 |
| Maximum operating temperature | 70 °C |

### Sustainability

| Feature | Value |
|---|---|
| Sustainability compliance | Yes |
| Sustainability certificates | RoHS, Federal Communications Commission (FCC), CE |

### Features

| Feature | Value |
|---|---|
| Brand compatibility | Juniper |
| Mean time between failures (MTBF) | 3000000 h |
| Form factor | QSFP |
| Product colour | Silver |

### Performance

| Feature | Value |
|---|---|
| Digital Diagnostics Monitoring (DDM) | Yes |
| Fiber ethernet cabling technology | 40GBASE |
| Rx wavelength (max) | 850 nm |
| Rx wavelength (min) | 850 nm |
| Tx wavelength (max) | 850 nm |
| Tx wavelength (min) | 850 nm |
| Wavelength | 850 nm |
| Maximum transfer distance | 300 m |
| SFP transceiver standard | ESR4 |
| Fiber optic connector | MTP/MPO |
| Multi-mode fiber (MMF) supported | Yes |
| Interface type | QSFP |
| Maximum data transfer rate | 40000 Mbit/s |
| SFP transceiver type | Fiber optic |

## FAQ

### How much does the Fiber optic transceiver BlueOptics QFX-QSFP-40GE-ESR4-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: interface type, maximum data transfer rate, sfp transceiver type, 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/6185040/61180900_large.webp