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

**URL:** https://aio.lv/en/product--blueoptics-qsfp-40g-esr4-lc-bo--6185014
**Data updated:** 2026-03-07 15:15 (EET)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP-40G-ESR4-LC-BO
**EAN:** 4063232074740
**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-lc-bo--6185014

## 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-LC-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 has a mean time between failures (MTBF) of 1,000,000 hours, ensuring reliability. Weighing only 40 g, it is lightweight and easy to install. This module is ideal for data centers and networking applications requiring efficient and fast connectivity.

## Long description

The BlueOptics QSFP-40G-ESR4-LC-BO is a QSFP fiber optic transceiver module for 40 Gigabit Ethernet links. It operates at an 850 nm wavelength, supports multimode fiber with an MPO/MTP connector and provides a maximum data transfer rate of 40 Mbit/s across distances up to 300 m. The module is lightweight (approx. 40 g) and manufactured to MSA-compliant mechanical and electrical specifications, offering a design intended for integration with switches, routers, storage systems and other network hardware that support QSFP 40GBASE-ESR4 transceivers.
Advantages
The transceiver offers compatibility with industry-standard QSFP interfaces and is produced using components that meet common industrial quality standards, enabling long mean time between failures (MTBF ~1,000,000 hours). Its MPO/MTP connector and multimode operation provide simultaneous send/receive capability over a single fiber assembly. Digital diagnostic monitoring (DDM/DOM) support simplifies remote monitoring of optical parameters where host hardware supports this feature. Compact size and low weight make the module easy to handle and install in populated racks and high-density ports.
Suitable for
Data center aggregation and spine switches
Server-to-switch high-speed uplinks
Storage area networks and NAS interconnects
High-bandwidth campus or enterprise backbone links
Key specifications
Interface type: 40 Gigabit Ethernet (QSFP form factor)
Wavelength: 850 nm (transmit and receive)
Maximum data rate: 40 Mbit/s
Maximum transfer distance: up to 300 m over multimode fiber
Fiber connector: MPO/MTP (multifiber)
Weight: approximately 0.04 kg
Diagnostics: digital diagnostic monitoring (DDM/DOM) supported when host hardware provides access
How to use
Install the QSFP transceiver into a compatible QSFP slot on your switch, router or storage device, ensuring the host device supports 40GBASE-ESR4 transceivers and any required DDM/DOM functions. Connect an appropriate MPO/MTP multimode fiber patch cord or patch panel link between transceivers; observe correct orientation and mating of the MPO/MTP connector. After insertion, verify link status and configuration on the host device; adjust interface settings if necessary to match the network protocol (Ethernet, Fibre Channel over Ethernet, etc.). For removal, follow hot-swap guidelines of the host hardware and handle the module by its edges to avoid contamination of the optical interfaces.
Usage recommendations
Use OM3/OM4 multimode fiber for optimal reach and performance up to the specified 300 m, keep MPO/MTP connectors clean and protected with dust caps when not in use, and verify host compatibility for DDM/DOM access. Follow manufacturer and data center best practices for ESD protection during handling and for patching in high-density environments.

## 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 Module BlueOptics QSFP-40G-ESR4-LC-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/6185014/54616216_large.webp