Cisco - SFP (mini-GBIC) transceiver module - 100Mb LAN - 100Base-FX - LC multi-mode - up to 2 km - 1310 nm - for Catalyst 2960, 2960G, 2960S, 2970G, 3560, 3560E, 3560G, 3560V2, 3560X, 3750, 3750G

The Cisco 100BASE-FX Small Form-Factor Pluggable (SFP) Fast Ethernet Interface Converter (GLC-GE-100FXu003d) is a hot-swappable device that plugs into a Gigabit Ethernet SFP port on Cisco switches. The Cisco SFP provides full-duplex 100-Mbps connectivity between switches over multimode fiber (MMF) infrastructures. It offers investment protection and an easy migration path for customers moving to Gigabit Ethernet connections in the future. The 100BASE-FX SFP operates on ordinary multimode fiber optical link spans of up to 2 kilometers in length. Customers implementing Cisco 100BASE-FX SFP can use 1000BASE-X SFPs in the future (including SX, LX/LH, ZX, and coarse wavelength-division multiplexing SFPs).