Cisco SFP-10/25G-LR-S 10/25GBASE-LR SFP28 Transceiver

One module, two speeds. The Cisco SFP-10/25G-LR-S is a dual-rate SFP28 transceiver that runs 25GBASE-LR today and falls back to 10GBASE-LR in the same slot — the module you stock when a network is mid-migration from 10G to 25G, because it links at either rate over the same single-mode fiber plant.

It carries 1310nm optics good for 10 km over standard single-mode fiber with a duplex LC connector, and supports digital optical monitoring (DOM) for light-level diagnostics. Every unit is genuine Cisco (base part 10-3251-01) with its label and hologram verified before it ships.

Key Specifications

• Part Number: Cisco SFP-10/25G-LR-S (base P/N 10-3251-01)
• Form Factor: SFP28 (SFP+ compatible slot)
• Data Rates: Dual-rate 25GBASE-LR / 10GBASE-LR
• Wavelength: 1310nm
• Distance: Up to 10 km
• Media: Single-mode fiber (SMF)
• Connector: Duplex LC
• Features: DOM/DDM support
• Condition: Refurbished — tested and verified

Why Buy From Reef Telecom?

• Genuine Cisco — label and hologram verified on every unit
• Professionally tested and inspected
• 10-year warranty on every unit
• Free shipping on orders over $300

Condition

Certified Refurbished

Warranty

10-Year Reef Telecom Warranty

Manufacturer Part Number

SFP-10/25G-LR-S

Reef SKU

SFP-10/25G-LR-S-R

UPC

0889728001656

Brand

Cisco

Free ground shipping on orders over $300 (contiguous US). Same-day shipping on orders placed before 4 PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.