AddOn QSFP-40G-LR4-S-AO 40GBASE-LR4 QSFP+ | Single-Mode, TAA — QSFP-40G-LR4-S-AO

Extend 40 Gigabit Ethernet connectivity across longer single-mode fiber runs with a QSFP+ LR4 transceiver designed for enterprise optical networks. The QSFP-40G-LR4-S-AO supports 40GBASE-LR4 operation and is built for data networking environments where longer reach and stable optical transport are required. This module is a practical choice for teams standardizing on compatible optics without compromising on deployment requirements. Its hot-swappable form factor supports faster maintenance cycles, while single-mode fiber compatibility makes it suitable for inter-rack, campus, and aggregation links that exceed short-reach multimode use cases. The TAA-compliant profile also helps procurement teams meet sourcing requirements in regulated environments. For organizations that need a verified LR4 option for Cisco-compatible infrastructure, this transceiver offers a clean path to extend 40 GbE links with the right balance of reach, compliance, and operational simplicity. It is the kind of module that earns its place in a production network by reducing friction at both the technical and purchasing layers. Ideal For Longer-reach switch uplinks over single-mode fiber Data center interconnects requiring 40 GbE transport Campus backbone links between network aggregation points TAA-sensitive procurement for enterprise optical infrastructure Why This Product 1 LR4 optics support longer reach than short-reach multimode modules 2 TAA compliance helps satisfy regulated procurement requirements 3 Single-mode support fits backbone and interconnect deployments 4 Hot-swappable design reduces service interruption during replacement