The FTSLB900FS01 is an FX fusion OS2 LC-APC SX 900 - FX fusion splice-on connector in green. This unit can be used for Field-termination of fiber optic cables within Patch Panels, Distribution Frames, Workstation Outlets for FTTD (Fiber to the Desk), drops for FTTH (Fiber to the home) and MDU (Multiple Dwelling Units.