# Network transceiver module CBO QFX-QSFP-40GE-SR4-BO, QSFP+, 40 Gbit/s, 850 nm, multimode

**URL:** https://aio.lv/en/product--blueoptics-qfx-qsfp-40ge-sr4-bo--4466207
**Data updated:** 2026-02-25 16:31 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QFX-QSFP-40GE-SR4-BO
**EAN:** 4063232628431
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 92.99 €
**Prices and availability valid until:** 2026-08-08 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-40ge-sr4-bo--4466207

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.08.2026 | free |
| Pickup points | 12.08.2026 | 1.89 EUR |
| Courier delivery to door | 12.08.2026 | 4.99 EUR |

## Summary description

CBO QFX-QSFP-40GE-SR4-BO is a QSFP+ network transceiver module supporting 40 Gbit/s data rate at 850 nm for multimode fiber. Designed for short-range Ethernet and datacenter connections, it provides four-lane parallel optics for high-density switching and aggregation. Use it to upgrade or replace 40G ports, enabling reliable high-throughput links in server rooms and enterprise networks.

## Long description

CBO QFX-QSFP-40GE-SR4-BO is a QSFP+ network transceiver module engineered for 40 Gbit/s Ethernet over multimode fiber at 850 nm. The module uses four parallel transmit and receive lanes to provide aggregated 40 Gbit/s throughput for short-range links in data centers, aggregation switches, and server-to-switch connections. It is designed for high-density environments where space and port consolidation are important, enabling straightforward upgrades of existing 40G ports and compatible switch interfaces.
Advantages
The QSFP+ form factor delivers a compact, hot-pluggable solution that reduces rack space while maintaining high throughput. Operating at 850 nm with multimode fiber, it supports short-reach connections with low power consumption and consistent signal integrity. Its four-lane parallel optic design simplifies cabling for 40 Gbit/s links and is compatible with standard MPO/MTP cabling assemblies for simplified installation and maintenance.
Suitable for
40 Gbit/s short-range Ethernet links in data center top-of-rack and spine architectures
Server-to-switch or switch-to-switch aggregation within enterprise networks
High-density switching environments where multiple 40G ports are required
Migration paths from multiple 10G links to consolidated 40G connectivity
Key specifications
Interface type: QSFP+ form factor
Data rate: 40 Gbit/s aggregated (four 10 Gbit/s lanes)
Wavelength: 850 nm
Fiber type: Multimode fiber (MMF)
Optical design: Four-lane parallel optics
Typical reach: short-range multimode links (data center/enterprise distances)
Hot-pluggable: Yes
How to use
Insert the QSFP+ transceiver into a compatible switch or host port according to the device manufacturer’s installation instructions, ensuring the module is fully seated and latched. Connect the multimode MPO/MTP fiber assembly matching the parallel lanes orientation and maintain proper fiber bend radius. Verify link status and data rate through the switch interface or management software. For replacement, power down the port if recommended by your equipment vendor, remove the existing module, and install the new transceiver following anti-static handling procedures.
Usage recommendations
For reliable operation, use multimode fiber cabling rated for the intended reach (OM3/OM4 as appropriate), keep connectors clean, and follow manufacturer guidelines for operating temperature and ESD precautions. Validate compatibility with your switch model and firmware to ensure optimal performance of the 40 Gbit/s link.

## FAQ

### How much does the Network transceiver module CBO QFX-QSFP-40GE-SR4-BO, 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 — 443 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 07.08.2026 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

## Image

https://aio.lv/img/cache/product/4466207/59854221_large.webp