The QSFP-100G-ZR4-S is a Cisco 100 Gigabit Ethernet Quad Small Form-Factor Pluggable (QSFP) transceiver, designed for long-haul optical connections. It utilizes the ZR4 standard, enabling data transmission over distances up to 80 kilometers on single-mode fiber. This transceiver employs wavelength-division multiplexing (Western DigitalM) to transmit four 25Gbps wavelengths over a single fiber pair. The “-S” indicates support for specific Cisco platforms and features. The “X2” indicates there are two of these transceivers.
