The T020-001-SC50 FC to SC 50/125 Adapter converts a native FC fiber female port on the Tripp Lite T020-001-PSF Multi-Function Optical Fiber Cable Tester to an SC female port for 50/125 multimode cable testing. "50/125" is clearly labeled on the unit to differentiate the T020-001-SC50 from other adapters. Included dust caps keep the connectors clean when not in use.