400G QSFP-DD DR4 Transceiver QSFP-DD-400G-DR4
400GBASE-DR4 · 1310nm · Single-mode (SMF) · MPO · 500m
400GBASE-SR8 · 850nm · Multimode (MMF) · MPO · 100m
Compatible with major switch brands — share your equipment model to confirm coding before ordering. 3-year warranty included.
The 400GBASE-SR8 QSFP-DD transceiver delivers 400 Gbps over multimode fiber (MMF) through an MPO interface, up to 100 m. It is hot-pluggable, QSFP-DD MSA-compliant, and supports DDM digital diagnostics.
400G QSFP-DD is the current spine and AI-fabric building block, packing eight lanes into a double-density QSFP slot. SR8 and DR4 use MPO multimode to 500 m; FR4 and LR4 use LC single-mode up to 10 km.
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.
| Model / Part Number | QSFP-DD-400G-SR8 |
|---|---|
| Ethernet Standard | 400GBASE-SR8 |
| Data Rate | 400G |
| Wavelength | 850 nm |
| Fiber Type | Multimode (MMF) |
| Connector | MPO |
| Max Reach | 100m |
| Form Factor | QSFP-DD |
| DDM support | Yes |
400GBASE-DR4 · 1310nm · Single-mode (SMF) · MPO · 500m
400GBASE-FR4 · CWDM4 · Single-mode (SMF) · Duplex LC · 2km
400GBASE-LR4 · CWDM4 · Single-mode (SMF) · Duplex LC · 10km