# Transceiver CBO QSFP-40G-SR4 Fiber Optic 40Gbps 850nm

**URL:** https://aio.lv/en/product--blueoptics-qsfp-40g-sr4-lo-bo--4466394
**Data updated:** 2026-02-25 16:31 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP-40G-SR4-LO-BO
**EAN:** 4063232073859
**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-qsfp-40g-sr4-lo-bo--4466394

## 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

CBO QSFP-40G-SR4 is a fiber optic transceiver module supporting 40 Gbps data rate over multimode fiber at 850 nm wavelength. Designed for high-speed network links and data center interconnects, it provides a compact QSFP form factor for easy installation in compatible switches and servers. Suitable for short-range connections and upgrade of 40GbE infrastructure.

## Long description

The Transceiver CBO QSFP-40G-SR4 Fiber Optic 40Gbps 850nm is a quad small form-factor pluggable (QSFP) module designed for short-range 40 Gigabit Ethernet links over multimode fiber. Operating at an 850 nm wavelength, this BlueOptics transceiver supports a 40 Gbps aggregate data rate and integrates into compatible switches, routers and server network interfaces to enable high-density data center interconnects and server-to-switch connections.
Advantages
The compact QSFP form factor allows for high port density and hot-pluggable installation without powering down equipment. Using multimode fiber and an 850 nm optical interface, the module provides cost-effective short-reach connectivity with low latency and stable signal performance. Compatibility with standard QSFP sockets simplifies upgrades of existing 40GbE infrastructure and reduces cabling complexity by aggregating four lanes into a single transceiver.
Suitable for
Short-range 40 Gigabit Ethernet links within data centers
Server-to-switch and switch-to-switch interconnects
High-density aggregation switches and spine/leaf architectures
Upgrading or expanding existing 40GbE multimode networks
Key specifications
Form factor: QSFP (quad SFP)
Data rate: 40 Gbps aggregate
Wavelength: 850 nm
Fiber type: Multimode fiber (MMF)
Range class: Short-range (SR) suitable for short-reach links
Interface: MPO/MTP or compatible multimode fiber connector (depending on system cabling)
Hot-pluggable: Yes
How to use
Install the transceiver into a compatible QSFP slot on a switch, router or network interface card until it clicks into place. Connect the multimode fiber cable using the appropriate MPO/MTP connector to the transceiver port and ensure correct fiber polarity. Once installed, verify link status and speed through the host device management interface. For removal, power down the link if required by the host device documentation and gently pull the module out using the release latch.
Usage recommendations
Use high-quality multimode fiber and follow the switch or server vendor's compatibility list to ensure proper operation. Keep optical connectors clean and capped when not in use, and avoid bending fiber beyond recommended radii. For maximum performance, match transceiver and cabling types (e.g., OM3/OM4) to the intended link distance and monitor link status after installation.

## FAQ

### How much does the Transceiver CBO QSFP-40G-SR4 40Gbps 850nm 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

## Image

https://aio.lv/img/cache/product/4466394/59853521_large.webp