Keep high-density switching fabrics moving with a 40GBASE-SR4 QSFP+ transceiver designed for multimode optical links. The AddOn QSFP-40G-SR4-S-AO supports 40 Gigabit Ethernet over an MSA-compliant, hot-swappable form factor, making it a practical fit for data center uplinks, aggregation layers, and short-reach interconnects. This module is positioned for teams that need compatibility without sacrificing deployment discipline. TAA compliance supports procurement requirements, while the Cisco-compatible design helps simplify replacement planning in mixed-vendor environments. For infrastructure teams standardizing on 40 GbE, it provides a straightforward way to preserve link performance across optical network and data networking applications. Because it is a QSFP+ transceiver rather than a lower-grade alternative, it is suited to environments where port density, serviceability, and standards alignment matter. Use it where short-reach multimode connectivity is required and where downtime from mismatched optics is not acceptable.