400G QSFP-DD SR4

Overview

The 400G QSFP-DD SR4 transceiver uses 850nm VCSEL and PAM4 modulation with an MPO-12 interface to deliver 400G short-reach over multimode fiber (OM4/OM5) up to 100m, drawing less than 8.5W — a cost-effective solution for AI compute clusters and data center intra-rack high-speed links.

Features

Ultra-fast: 400Gbps throughput handles massive data with ease.

Space-saving: Quad-density QSFP-DD packaging doubles port density.

Future-proof: Backward compatible with QSFP28 for smooth 400G upgrades without chassis changes.

Flexible: Supports 1-to-4 breakout, splitting one 400G port into four 100G links for higher port utilization.

Cost-effective: Purpose-built for short reach with affordable multimode fiber.

Applications

AI/HPC intra-rack interconnect, data center Spine-Leaf switching, low-latency high-performance storage access, enterprise 400G upgrades.