100GBASE CWDM4 QSFP Transceiver, LC, 2km over SMF. Cisco QSFP-100G-CWDM4-S. The Cisco QSFP-100G-CWDM4-S Module supports link lengths of up to 2 km over a standard pair of G.652 Single-Mode Fiber (SMF) with duplex LC connectors.
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