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Cisco / Cisco 50G interface modules and cables

Cisco SFP-50G-BX40U-I · Pluggable transceiver

P/N: SFP-50G-BX40U-I

Pluggable transceiver

Link transceiver; check both endpoints, connectors, media and reach.

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Cisco SFP-50G-BX40U-I · Pluggable transceiver — Specification schematic, not a product photograph or installation drawing.
Specification schematic, not a product photograph or installation drawing. Citadex Systems · Specification source
01 / Specifications
MPN / P/N
SFP-50G-BX40U-I
Manufacturer designation
SFP-50G-BX40U-I
Manufacturer description
Cisco 25/50GBASE-BR40 SFP56 bidi Module
Source protocol/rate designation (breakout rates are not summed)
25/50GBASE-BR40
Source connector/form-factor designations
SFP56
Optical link conditions (one source row; align lists in order)
Wavelength (nm)=1289; Cable type=SMF; Core size ; (microns)=G.652; Cable ; distance=30/40km
Selection limits
Confirm exact host model/port, software release, FEC and supported breakout using Cisco TMG Compatibility Matrix. Fiber reach depends on the listed fiber grade, connector polish, optical budget and operating mode. Matching form factor alone does not guarantee support.

Specification source: Cisco ↗
Checked against documentation: 16.10.2026

Reference catalogue for quotation requests. Availability, production status, condition, price, lead time and warranty are individually confirmed. A listed part number is not a stock claim.

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