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Cisco / Cisco 400GDD interface modules and cables

Cisco QDD-400G-VR4 · Pluggable transceiver

P/N: QDD-400G-VR4

Pluggable transceiver

Link transceiver; check both endpoints, connectors, media and reach. Max power consumption (W): 12 · Optical Connector: MPO-12 MMF APC · Cable type: MMF

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Cisco QDD-400G-VR4 · 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
QDD-400G-VR4
Manufacturer designation
QDD-400G-VR4
Manufacturer description
400G QSFP-DD Transceiver, 400GBASE-SR4, MPO12 APC MMF 50m
Source protocol/rate designation (breakout rates are not summed)
400G; 400GBASE-SR4
Source connector/form-factor designations
QSFP-DD; MPO
Max power consumption (W)
12
Optical Connector
MPO-12 MMF APC
Cable type
MMF
Cable distance
30m (OM3) 50m (OM4/OM5)
Wavelength (nm)
842-948
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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