Cisco SFP-10G-LR-S 10GBASE-LR SFP+ 1310nm 10km SMF Transceiver Module - Refurbished
Every WhaleyComm unit is professionally tested, reset to factory defaults, and certified by our in-house engineers — the same standard trusted by 5,000+ organisations across 25 years. Not a refurb marketplace. A certified lifecycle partner.
Tested to factory specification. Backed by 25 years of enterprise trust.

Cisco SFP-10G-LR-S | 10GBASE-LR SFP+ Transceiver Module
Tested to factory specification. Backed by 25 years of enterprise trust.
The Cisco SFP-10G-LR-S is a high-performance 10GBASE-LR SFP+ optical transceiver module designed for long-reach single-mode fiber (SMF) deployments. Operating at a 1310nm wavelength and supporting distances up to 10km, this module is ideal for enterprise data centers, service provider networks, and campus core interconnects that demand reliable, high-speed 10 Gigabit Ethernet connectivity.
This unit is professionally refurbished by WhaleyComm's certified technicians and tested to original Cisco factory specifications, ensuring performance that meets or exceeds OEM standards. Each module undergoes rigorous inspection, cleaning, and functional validation before shipment — giving you enterprise-grade reliability at a fraction of new pricing.
Product Details
- Manufacturer / Vendor: Cisco
- MPN: SFP-10G-LR-S
- Product Type: Optics / SFP+ Transceiver
- Standard: 10GBASE-LR (IEEE 802.3ae)
- Wavelength: 1310nm
- Max Reach: Up to 10km over Single-Mode Fiber (SMF)
- Connector Type: LC Duplex
- Data Rate: 10 Gbps
- Condition: Refurbished – Tested to Factory Specification
- Compatible With: Cisco Catalyst, Nexus, ASR, ISR, and other SFP+-enabled platforms
Why Choose WhaleyComm Refurbished?
At WhaleyComm, "refurbished" means something real. Every unit we ship is:
- ✅ Fully inspected and cleaned
- ✅ Tested to original manufacturer (Cisco) factory specifications
- ✅ Verified for optical power levels, data integrity, and compatibility
- ✅ Backed by over 25 years of enterprise networking experience and a customer base of 5,000+ satisfied clients
Lifetime Warranty
No Time Limits. No Questions Asked. Every WhaleyComm unit ships with a Lifetime Warranty. If your SFP-10G-LR-S fails under normal operating conditions at any point — whether it's 2 years or 20 years from now — we replace it. That's our promise and our track record.
Shipping & Returns
- Shipping: Orders ship within 1–2 business days.
- Returns: Contact WhaleyComm support for any DOA (Dead on Arrival) or warranty-related issues. We make it right — fast.
Compatibility Note
The Cisco SFP-10G-LR-S is a Cisco-branded module with Cisco digital optical monitoring (DOM) support and is compatible with a wide range of Cisco Catalyst (3750X, 3850, 4500, 6500), Nexus (3000, 5000, 7000, 9000), and other SFP+-capable platforms. Please verify slot and software compatibility with your specific chassis and IOS/NX-OS version.
WhaleyComm — Trusted Networking Hardware Since 1999. Quality Tested. Lifetime Backed. Enterprise Proven.