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Cisco / Cisco 400G interface modules and cables

Cisco QSFP-400G-FR4 · Pluggable transceiver

P/N: QSFP-400G-FR4

Pluggable transceiver

Link transceiver; check both endpoints, connectors, media and reach. Max power ; consumption (W): 9 · Optical Connector: Duplex LC SMF UPC · Wavelength (nm): 1310

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Cisco QSFP-400G-FR4 · 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
QSFP-400G-FR4
Manufacturer designation
QSFP-400G-FR4
Manufacturer description
400G QSFP112 Transceiver, 400GBASE-FR4, Duplex LC, 2 km over SMF
Source protocol/rate designation (breakout rates are not summed)
400G; 400GBASE-FR4
Source connector/form-factor designations
QSFP112; Duplex LC
Max power ; consumption (W)
9
Optical Connector
Duplex LC SMF UPC
Optical link conditions (one source row; align lists in order)
Nominal ; wavelength (nm)=1310; Cable type=SMF; Core size ; (microns)=G.652; Cable ; distance=2km
Wavelength (nm)
1310
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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