Extreme Networks 10503

Overview

The Extreme Networks 10503 is a SFP28 transceiver module designed to deliver a sustained 25.78 Gbps data rate for Ethernet 25GBase-ESR connections. It extends network reach up to 6.2 miles using single-mode fiber and an LC connector, making it ideal for long-distance links such as campus backbones and point-to-point connections between buildings. This module integrates seamlessly with the ExtremeCloud E3120 appliance, providing a reliable and efficient upgrade path for networks moving beyond 10 GbE speeds.

Key features

• Supports high-speed 25.78 Gbps Ethernet links to meet growing bandwidth demands
• Uses single-mode fiber with an LC interface to enable long-distance transmission up to 6.2 miles
• Operates within a wavelength range of 1294.53 nm to 1310.19 nm for stable and consistent optical performance
• Designed for easy installation into existing SFP28 slots without requiring complex re-cabling
• Optimized for use with ExtremeCloud E3120 appliances to maintain vendor compatibility and support
• Low latency and consistent throughput ensure reliable data transfer over extended distances

Key specs

• Data rate: 25.78 Gbps
• Transmission distance: up to 6.2 miles (10 kilometers)
• Fiber type: single-mode
• Connector type: LC
• Wavelength range: 1294.53 nm to 1310.19 nm
• Compatible device: ExtremeCloud E3120 appliance

Connectivity and compatibility

This transceiver module fits into standard SFP28 slots, allowing it to integrate smoothly with compatible Extreme Networks hardware. Its single-mode fiber interface supports long-distance optical connections, making it suitable for network environments where copper cabling is impractical or insufficient. The LC connector ensures a secure and stable fiber connection, supporting high-speed data transmission across extended distances.

Ideal uses and environments

The 10503 module is well suited to enterprise and campus networks that require scalable bandwidth and extended reach between buildings or remote data closets. It works effectively in scenarios where upgrading from 10 GbE to 25 GbE is necessary without overhauling existing fiber infrastructure. Network administrators managing multi-building campuses or data centers will find this module a practical choice for enhancing core or aggregation layer capacity while maintaining operational continuity.

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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