The MED102A is our premium serial to single-mode fiber optic converter. It provides versatile connections between asychronous full- or half-duplex serial equipment using duplex single-mode fiber optic cable. The converter can also be set up in a multi-drop configuration to allow one serial device to communicate with multiple devices on a fiber ring. It supports mixed standards, which allows you to replace other converters and isolators and add the EMI/RFI protection inherent to fiber optic communications. Manufacturer: Black Box Corporation. Manufacturer Part Number: MED102A. Brand Name: Black Box. Product Name: Industrial DIN Rail RS-232/RS-422/RS-485 Fiber Driver, Single-Mode. Product Type: Transceiver/Media Converter. [Interfaces/Ports] Total Number of Ports: 3. Network (RJ-45): No. DVI: No. USB: No. Parallel Port: No. Digital Audio: No. Digital Audio/Video: No. Management Port: No. Number of SC Ports: 1. SC Port Type: Duplex. Number of Serial Ports: 2. [Media & Performance] Media Type Supported: Optical Fiber. Fiber Mode Supported: Single-mode. Maximum Distance Supported: 8. 95 Mile. [Physical Characteristics] Form Factor: Rail-mountable. Height: 3. 5". Width: 1. 2". Depth: 5". Weight (Approximate): 8 oz. [Miscellaneous] Certifications & Standards: CE. Country of Origin: United States. [ ] Limited : 5 Year.