The fiber quick connector adapter is in size: 56x9x8mm/2. 3 inch; Style: Embedded Fiber Fast Connector; Connector Polish: SC/APC, Insertion Loss: AVG≤0. 5dB; Return Loss: ≥50dB; Fiber Type: Single-Mode; Operation Temperature: -40℃~85℃; Applicable Optical Fiber:. Making easy-to-install fiber optic fast connector for more than 20 years. FTTH SC APC Optical Fiber Cable Quick Connector Fast Cold Connection Adapter for CATV Network Its advantages are complete. The SC/UPC fast connector are factory pre-polished, field-installable connectors that completely eliminate the need for hand polishing in the field. These connectors are designed to get your network up and running until high grade connectors are installed or fiber optic pigtails are spliced on.