Allied Telesis AT-SPFX/2 SFP - 1 LC 100Base-FX Network - For Data Networking, Optical Network - Optical Fiber - Multi-mode - Fast Ethernet - 100Base-FX - 100 Mbit/s - Hot-swappable 100FX (LC) SFP, 2 km The AT-SPFX offers a short-haul option to extend your network to 2 km. The AT-SPF series SFPs are compatible with a limited number of SFP compatible products. Call or check with your Allied Telesis sales representative for details.