The Cisco QSFP-40G-SR4-S is designed for Cisco 40G QSFP ports and supports many Cisco Nexus, Catalyst, ASR, and NCS platforms. It uses 40GBASE-SR4 over multimode fiber with an MPO-12 connector, so please verify your switch model and port type before ordering.

Installation is quick and straightforward. This hot-swappable 40G QSFP module plugs directly into a compatible Cisco QSFP port, and the fiber connects through an MPO/MTP female connector. No special tools are required, but proper fiber polarity and clean end faces are important.