Features UCI adapters provide direct connectivity for Tempo FiberTOOLS to a wide range of industry-standard fiber optic connectors Adapter design ensures maximum accuracy and repeatability when performing critical measurements on fiber optic systems Easy to clean and use Single-mode and multimode compatible UCI adapters feature durable phosphor bronze alignment sleeve UCI (Universal Connector Interface) adapter is used on all 250/260 "A" Series Sources and 330 Series Variable Optical Attenuators When using a hybrid adapter cable, the instrument UCI adapter and one end of the hybrid adapter cable should be a commonly available connector type. (i.E. FC, SC or ST) Application: Used On All 250/260 "A" Series Sources and 330 Series Variable Optical AttenuatorsGreenlee