# Network transceiver module Cisco QSFP-40G-LR4-S

**URL:** https://aio.lv/en/product--cisco-qsfp-40g-lr4-s--839679
**Data updated:** 2025-12-29 05:20 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** Cisco
**Manufacturer code:** QSFP-40G-LR4-S=
**EAN:** 0882658786167
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11 189.49 €
**Prices and availability valid until:** 2026-08-16 23:59
**Price without VAT (21%):** 9 247.51 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cisco-qsfp-40g-lr4-s--839679

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.79 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

The Cisco QSFP-40G-LR4-S is a fiber optic network transceiver module with a maximum data transfer rate of 40000 Mbit/s. Operating at 1310 nm, it supports long-range connectivity. This MSA-certified QSFP module is ideal for high-speed data center applications, ensuring reliable performance and compatibility. It includes 1 unit per package, making it a convenient choice for network upgrades.

## Long description

The Cisco QSFP-40G-LR4-S is a QSFP fiber optic transceiver module that supports 40 Gigabit Ethernet over single-mode fiber. It operates at 1310 nm and carries the 40G signal on four wavelengths, with multiplexing and demultiplexing handled within the module. The module uses duplex LC connectors and supports link distances of up to 10 kilometres over standard G.652 single-mode fiber. The QSFP-40G-LR4-S is MSA-certified and supplied as one unit per package.
Advantages
The module provides a dedicated 40GBase Ethernet interface in a compact QSFP form factor, enabling long-range connectivity up to 10 km and interoperability with MSA-compliant equipment. Its use of four wavelengths allows efficient transmission of the 40 Gigabit signal while maintaining standard duplex LC connectivity for compatibility with existing fiber cabling.
Suitable for
 Data center uplinks and spine-leaf connections
 High-speed switch-to-switch links
 Long-reach optical connections over G.652 single-mode fiber
 Network upgrades requiring 40 Gigabit Ethernet ports
Key specifications
 Form factor: QSFP
 Data rate: 40 Gbit/s (40GBase Ethernet)
 Wavelength: 1310 nm (four-wavelength multiplexing)
 Maximum reach: up to 10 km over G.652 single-mode fiber
 Connector: duplex LC
 Compliance: MSA-certified
 Package quantity: 1 unit
How to use
Install the QSFP-40G-LR4-S into a compatible QSFP port on a switch or router following the device manufacturer's insertion procedure. Connect duplex LC single-mode fiber cables to the module's LC ports, ensuring correct transmit/receive alignment. Verify that the host device is configured for 40GBase Ethernet on the port and monitor link status; the module handles wavelength multiplexing internally and requires no external optics.
Usage recommendations
Use single-mode G.652 fiber with properly cleaned LC connectors to achieve the stated reach of up to 10 km. Ensure host compatibility with QSFP 40G modules and keep firmware and transceiver support lists up to date to avoid interoperability issues.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | QSFP |
| Maximum data transfer rate | 40000 Mbit/s |
| Networking standards | IEEE 802.3ba |
| Auto MDI/MDI-X | Yes |
| Wavelength | 1310 nm |
| Fiber optic connector | LC |
| Maximum transfer distance | 10000 m |
| Fiber cable diameters supported (core/cladding) | 9/125 |
| Single-mode fiber (SMF) supported | Yes |
| SFP transceiver standard | LR |

### Network

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

### Logistics data

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

### 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 |

### Certificates

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

### Features

| Feature | Value |
|---|---|
| Hot-Plug support | Yes |

### Packaging data

| Feature | Value |
|---|---|
| Number of products included | 1 pc(s) |

## FAQ

### How much does the Network transceiver module Cisco QSFP-40G-LR4-S cost, and is it available for purchase?

The price is 11,189.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 45 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 03.08.2026 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, 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.

## Image

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