EXT-25G-LR Extreme Compatible 25G SFP28 LR 10km SMF Transceiver

The EXT-25G-LR is a 25G SFP28 long-reach transceiver that runs to 10km over single-mode fiber, keyed to a 1310nm center. It mates through a duplex LC face and carries 25G point-to-point across the LR span, giving Extreme-based access and aggregation ports a single-lane long-reach option. The 1310nm wavelength and 10km SMF budget are what place it on the longer runs rather than in-rack links, and the SFP28 cage keeps it drop-in for hosts already carrying 25G ports.

• Form Factor: SFP28
• Data Rate: 25G
• Protocol: LR
• Wavelength: 1310nm
• Fiber Type: SMF
• Reach: 10km
• Connector: Duplex LC
• OEM Equivalent: EXT-25G-LR

Compatibility: Documented OEM compatibility (Extreme published compatibility documentation): this module is accepted in 25G SFP28 ports on the Extreme 7520 Series, Extreme 7830 Series, Extreme 8520 Series, ExtremeSwitching 5520 Series, ExtremeSwitching 5720 Series, VSP 4900 Series, and VSP 7400 Series. This module follows Extreme's published compatibility matrix; for your exact line card or OS release, email 10.4@tenfouroptics.com and we'll confirm fit.

Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.

Validated for Extreme switching, it comes up as a recognized optic and streams live diagnostics over DDM. MSA-compliant and bench-verified one unit at a time. Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. Stocked; ships same or next business day.