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40G QSFP+

40G QSFP+ SR4 Transceiver QSFP-40G-SR4

40GBASE-SR4 · 850nm · Multimode (MMF) · MPO · 100m

Compatible with major switch brands — share your equipment model to confirm coding before ordering. 3-year warranty included.

Module overview

  • Hot-pluggable QSFP+ MSA form factor
  • DDM digital diagnostics for TX/RX monitoring
  • MPO optical interface for parallel fiber links
  • 3-year warranty · free technical support
  • Coding confirmed against your switch model

The 40GBASE-SR4 QSFP+ transceiver delivers 40 Gbps over multimode fiber (MMF) through an MPO interface, up to 100 m. It is hot-pluggable, QSFP+ MSA-compliant, and supports DDM digital diagnostics.

Typical deployments

40G QSFP+ remains a cost-effective aggregation layer: ToR-to-spine uplinks, 40G server adapters and legacy 40G switch ports. SR4 and eSR4 use MPO ribbon fiber at 100–300 m; IR4, LR4 and ER4 use LC duplex single-mode up to 40 km.

Before you order

MPO links are polarity-sensitive: confirm the MPO polarity and fiber count match your patch panel before installation, and clean both end faces. Share your switch model and port type so we confirm the coding for your equipment; every module ships with a 3-year warranty and free technical support.

Specifications

Model / Part NumberQSFP-40G-SR4
Ethernet Standard40GBASE-SR4
Data Rate40G
Wavelength850 nm
Fiber TypeMultimode (MMF)
ConnectorMPO
Max Reach100m
Form FactorQSFP+
DDM supportYes