# Network transceiver module Cisco QSFP-40G-SR4= Fiber optic

**URL:** https://aio.lv/en/product--cisco-qsfp-40g-sr4--621062
**Data updated:** 2026-01-10 14:19 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** Cisco
**Manufacturer code:** QSFP-40G-SR4=
**EAN:** 5712505435427
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 595.99 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 1 319.00 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cisco-qsfp-40g-sr4--621062

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

The Cisco QSFP-40G-SR4= is a fiber optic network transceiver module designed for high-speed data transfer. With a maximum data rate of 40000 Mbit/s and an interface type of QSFP+, it operates at a wavelength of 850 nm. This module is MSA certified, ensuring compatibility and reliability in various networking environments. Ideal for data centers and enterprise networks, it provides efficient and high-performance connectivity.

## Long description

The Cisco QSFP-40G-SR4= is a 40GBASE QSFP+ fiber-optic transceiver module designed for high-density 40 Gigabit Ethernet connectivity in data centers, high-performance computing networks, enterprise core and distribution layers, and service provider transport environments. It supports QSFP+ interfaces and a maximum data rate of 40,000 Mbit/s, operating at an 850 nm wavelength and complying with MSA and IEEE 40GBASE standards to ensure interoperability with other compliant equipment.
Advantages
The module is hot-swappable and supports the pay-as-you-populate model, allowing incremental deployment. It offers flexibility of interface choice and interoperability with IEEE-compliant 40GBASE modules in different form factors. Cisco quality identification (ID) support enables the switch to verify that the module is certified and tested by Cisco. The QSFP-40G-SR4= provides short-range multimode fiber links with predictable optical budgets for reliable 40G connections.
Suitable for
Data center spine and leaf interconnects
Aggregation and core links in enterprise networks
High-performance computing clusters
Short-reach 40G multimode fiber connections using OM3/OM4
Key specifications
Interface type: QSFP+
Data rate: 40,000 Mbit/s (40G)
Wavelength: 850 nm
Form factor: QSFP+ (hot-swappable)
Supported multimode fiber: OM3 (up to 100 m) and OM4 (up to 150 m)
Connector type: MPO/MTP multi-fiber (12-fiber ribbon); supports 4x10G breakout to duplex LC
Compliance: MSA and IEEE 40GBASE-SR4
How to use
Install the QSFP-40G-SR4= into a compatible QSFP+ slot on a Cisco or IEEE-compliant switch or router while the port is powered down if recommended by the platform documentation, or hot-swap where supported. Connect to OM3 or OM4 multimode fiber using MPO/MTP 12-fiber ribbon cables for native 40G links, or use ribbon-to-duplex breakout cables to operate in 4x10G mode to four 10GBASE-SR interfaces. Verify optical loss budgets and link status through the switch management interface and ensure the module ID is recognized when using Cisco platforms.
Usage recommendations
Use laser-optimized OM3 or OM4 multimode fibers with appropriate MPO/MTP connectors and check maximum channel insertion loss: up to 1.9 dB over 100 m of OM3 or 1.5 dB over 150 m of OM4. Consult the switch documentation for hot-swap procedures and ensure compatibility with the platform firmware to enable Cisco ID features.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | QSFP+ |
| Maximum data transfer rate | 40000 Mbit/s |
| Auto MDI/MDI-X | Yes |
| Wavelength | 850 nm |
| Fiber optic connector | LC |
| Maximum transfer distance | 150 m |
| Fiber cable diameters supported (core/cladding) | 50/125 |
| Multi-mode fiber (MMF) supported | Yes |
| SFP transceiver standard | SR |

### Network

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

### Certificates

| Feature | Value |
|---|---|
| Certification | MSA |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 10 - 80 |
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | 0 - 70 |
| Storage relative humidity (H-H) | 10 - 85 |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 85369010 |

## FAQ

### How much does the Network transceiver module Cisco QSFP-40G-SR4= cost, and is it available for purchase?

The price is 1,595.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 33 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 13.07.2026 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Leasing for legal entities. 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 Cisco 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 Cisco 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.

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