12G-SDI to HDMI2.0 4K Converter: 1-ch 12G-SDI input, 1-ch 12G-SDI loop out, 1-ch HDMI2.0 output, Audio output, 1-ch SFP input and 1-ch SFP fiber output.
Could be used as converter for only one pcs, also could be used as optical fiber transmitter and receiver.