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Continue to Chathttps://www.longlinestore.com/cisco-qsfp-100g-zr4-s-compatible-100gbase-zr4-qsfp28-1310nm-80km-dom-duplex-lc-smf-optical-transceiver-module - Cisco QSFP-100G-ZR4-S Compatible 100GBASE-ZR4 QSFP28 1310nm 80km DOM Duplex LC SMF Optical Transceiver Module