Extreme Networks 40G-LR4-QSFP10KM

Overview

The Extreme Networks 40G-LR4-QSFP10KM is a QSFP+ optical transceiver designed for 40 Gigabit Ethernet networks using single-mode fiber. It delivers data transfer speeds up to 40 Gbps while supporting distances up to 6.2 miles (10 km) under the 40GBase-LR4 standard. This module is ideal for connecting switches, routers, or storage devices across long spans without compromising performance or signal quality.

Installation is simple and efficient: just insert the transceiver into any compatible QSFP+ port and connect the fiber cables. The link activates automatically without the need for additional configuration, making it a practical solution for campus backbones, data center interconnects, and service-provider edge networks that require fast deployment and scalability.

Key features

• Supports 40 Gbps data transfer to handle high-bandwidth applications and traffic aggregation
• Complies with the 40GBase-LR4 Ethernet protocol for reliable long-distance single-mode fiber connections
• Hot-swappable QSFP+ form factor allows quick replacement or upgrades without downtime
• MSA compliance ensures compatibility with equipment from multiple vendors, reducing vendor lock-in
• Robust build quality from Extreme Networks helps maintain stable operation and lowers maintenance costs

Key specs

• Data rate: 40 Gbps
• Standard: 40GBase-LR4 Ethernet
• Fiber type: Single-mode fiber
• Maximum reach: 6.2 miles (10 km)
• Form factor: QSFP+
• Compliance: MSA (Multi-Source Agreement)

Connectivity and compatibility

This transceiver fits into any QSFP+ port that supports 40GBase-LR4 modules, making it suitable for a wide range of network switches, routers, and storage devices. Its MSA compliance guarantees interoperability across different manufacturers, which simplifies network design and future upgrades. The single-mode fiber interface supports long-distance links, ideal for campus environments or metro area networks.

Ideal uses and environments

The 40G-LR4-QSFP10KM is well suited to enterprise data centers that require high-speed leaf-spine fabrics, service providers building metro access rings, and organizations connecting remote buildings or sites. Its long reach and plug-and-play nature make it a strong choice for networks that demand both performance and flexibility without complex setup procedures.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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