StarTech.com Cisco SFP-10G-ZR-S Compatible SFP+ Module, 10GBASE-ZR, 10GbE Single Mode (SMF) Fiber Optic Transceiver, 10GE Gigabit Ethernet SFP+ LC Connector, 80km, 1550nm, DDM, Cisco ASR9000 - Lifetime Warranty (SFP-10G-ZR-S-ST) - SFP+ transceiver module (equivalent to: Cisco SFP-10G-ZR-S) - 10GbE - 10GBase-ZR - LC single-mode - up to 80 km - 1550 nm - for Cisco 250 Series; Nexus 22XX, 31XX, 3548, 93180, 93XX; ONE Nexus 55XX; UCS 62XX, C4200