Cisco GLC-ZX-SM original 1000BASE-ZX Gigabit Ethernet 70-80KM

The Cisco GLC-ZX-SM is a 1000BASE-ZX Small Form-Factor Pluggable (SFP) transceiver module designed for long-reach Gigabit Ethernet connections. It supports 1 Gbps speeds over single-mode fiber (SMF) at 1550 nm, with a maximum reach of approximately 70-80 km. It features a duplex LC connector, hot-swappable design, and operates in commercial temperatures.