The QSFP-100G-SR4-S is a 100 Gigabit Ethernet (100GbE) Quad Small Form-Factor Pluggable (QSFP28) transceiver. It’s designed for short-reach multimode fiber (MMF) communication, typically supporting distances up to 100 meters using OM4 fiber. The “SR4” designation indicates that it uses four parallel lanes, each operating at 25 Gbps, to achieve the 100 Gbps aggregate bandwidth. This transceiver is commonly used in data centers for high-density interconnects between switches, servers, and storage devices. The “S” often indicates a standard temperature range.
