# BlueOptics QFX-QSFP-40G-SR4 network transceiver module 40000 Mbit/s 850 nm

**URL:** https://aio.lv/en/product--blueoptics-qfx-qsfp-40g-sr4-bo--4466206
**Data updated:** 2026-02-25 16:31 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QFX-QSFP-40G-SR4-BO
**EAN:** 4063232644738
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 92.99 €
**Prices and availability valid until:** 2026-08-15 23:59
**Price without VAT (21%):** 76.85 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qfx-qsfp-40g-sr4-bo--4466206

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.08.2026 | free |
| Pickup points | 18.08.2026 | 1.89 EUR |
| Courier delivery to door | 18.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QFX-QSFP-40G-SR4 is a fiber optic transceiver module designed for high-speed data transfer at 40000 Mbit/s over short distances. It operates at a wavelength of 850 nm and uses the QSFP interface, making it suitable for data centers and high-performance computing environments. This module is sold individually and ensures reliable connectivity for demanding applications.

## Long description

The BlueOptics QFX-QSFP-40G-SR4 network transceiver module provides 40 Gbit/s fiber connectivity for short-range links. Designed for QSFP ports, it transmits at an 850 nm wavelength and is intended for high-density network environments such as data centers and high-performance computing racks. The module is sold individually and integrates with compatible QSFP slots to deliver reliable, low-latency links for server interconnects, switch uplinks and aggregation layers.
Advantages
This transceiver delivers a standardized QSFP form factor for easy hot-plug installation and compact port density. With a 40 Gbit/s maximum data transfer rate and an 850 nm optical wavelength, it supports multi-mode fiber short-reach connections while minimizing power consumption and signal loss across short distances. The module’s compatibility with common QSFP interfaces ensures predictable performance and straightforward replacement or scaling within existing infrastructure.
Suitable for
Server-to-switch and switch-to-switch short-range 40 Gbit/s links
Data center top-of-rack and spine aggregation
High-performance computing clusters requiring low-latency interconnects
Network upgrades where QSFP ports and multimode fiber are used
Key specifications
Interface type: QSFP
Maximum data transfer rate: 40000 Mbit/s (40 Gbit/s)
Optical wavelength: 850 nm
Designed for short-range multimode fiber links
Form factor: Quad Small Form-factor Pluggable (QSFP)
How to use
Install the module into a compatible QSFP slot following the host device manufacturer’s hot-plug guidance. Connect appropriate multimode fiber cables that match the SR4 link requirements and ensure proper polarity and connector type. After insertion, verify link status through the host device management interface and confirm 40 Gbit/s negotiation. For predictable performance, check that transceiver and switch firmware are compatible and that fiber patching follows data center cabling standards.
Usage recommendations
Use this module with short-range multimode fiber (OM3/OM4) for optimal 40 Gbit/s performance, avoid exceeding recommended link distances, and store and handle the transceiver in a clean environment to prevent contamination of optical interfaces.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | QSFP |
| Maximum data transfer rate | 40000 Mbit/s |
| Ethernet interface type | 40 Gigabit Ethernet |
| Fiber ethernet cabling technology | 40GBASE |
| Ethernet LAN | Yes |
| Wavelength | 850 nm |
| Fiber optic connector | MTP/MPO |
| Maximum transfer distance | 150 m |
| Rx wavelength (max) | 850 nm |
| Tx wavelength (max) | 850 nm |
| Multi-mode fiber (MMF) supported | Yes |

### Network

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

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Operational conditions

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

## FAQ

### How much does the BlueOptics QFX-QSFP-40G-SR4 network transceiver cost, and is it available for purchase?

The price is 92.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 423 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 13.08.2026 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, 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/4466206/64292487_large.webp