Cisco
Cisco SFP-25G-SR-S 25GBASE-SR SFP28 Transceiver 25Gbps 850nm MMF LC
PO and Net 30 available for schools, government, hospitals, and law firms.
Description
Description
Cisco SFP-25G-SR-S 25GBASE-SR SFP28 Transceiver Module
Save up to 80% on genuine Cisco optics with this refurbished SFP-25G-SR-S transceiver. Fully tested and backed by Reef Telecom's industry-leading 10-year warranty, this 25G SFP28 module delivers like-new performance for your data center and enterprise networking needs.
Key Specifications
- Data Rate: 25Gbps (25GBASE-SR) over multimode fiber (MMF)
- Wavelength: 850nm with dual LC/PC duplex connector
- Max Distance: 70m (OM3) / 100m (OM4) / 100m (OM5)
- Form Factor: SFP28, hot-swappable
- Power Consumption: 1.2W max — energy-efficient design
- Monitoring: Digital Optical Monitoring (DOM) for real-time diagnostics
- Compliance: IEEE 802.3by, RoHS, WEEE
- FEC: Requires RS-FEC on host ports for full-reach operation
Why Buy from Reef Telecom?
- 10-year warranty on all refurbished equipment
- Free shipping on orders over $300
- 100% genuine Cisco — fully tested before shipment
Compatibility & Use Cases
The SFP-25G-SR-S is compatible with Cisco Catalyst and Nexus switches, routers, and any device with SFP28 interfaces. Ideal for Top-of-Rack (ToR) and End-of-Row (EoR) switch-to-server links, data center interconnects, and high-performance computing environments where short-range 25G Ethernet connectivity is required.
Specs & Details
Specs & Details
Shipping & Warranty
Shipping & Warranty
Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.
All products include our industry-leading 10 Year Warranty backed by Reef Telecom.

We clean up after ourselves.
Ecommerce deliveries have a carbon footprint. That's why we support verified projects that remove carbon from the air.
Every delivery’s carbon footprint is calculated based on weight, shipping method, and distance traveled. We neutralize these emissions by purchasing verified carbon removal credits from groundbreaking projects.
With your purchase, you’ll join a community of proactive merchants and customers dedicated to a sustainable future. Together, we've removed emissions for over 81 million deliveries and removed over 56 thousand tonnes of carbon.
We work with a network of pioneering carbon removal companies that have been vetted by the commerce platform Shopify.
Reef Telecom Proudly Supports
-
Ocearch
2026 Monthly Shark Hero -
Coral Restoration Foundation
2025 Staghorn Donor -
Ocean Conservancy
2025 Donor
Smart IT. Clean Oceans. Boundless Possibilities.
Our goal is providing the highest quality refurbished equipment to promote environmentally-conscious equipment usage through it's lifecycle.