It allows viewing of HDMI image and audio signal via 3G SDI video interface. By connecting two devices that support 3G SDI video interface to the output port of the converter, it becomes possible to watch the source HDMI image on two devices with 3G SDI technology. It supports 3G-SDI, HD-SDI, SD-SDI formats. 3G-SDI, signal transmission rate : 2.970 Gbit/s and 2.970/1.001 Gbit/sFrequency bandwidth: 225MHz/link (HDMI 1.3)Image resolution values supported by Input and Output ports: 1080p, 1080i, 720p, 480iInput: 1 x HDMI female (19 pin)Output: 2 x BNC (SD/HD-SD/3G-SDI) Power adapter comes with the product. (5V DC/2A)SDI cable distances: 3G (100 meters), HD (200 meters), SD (300 meters)Chassis: Metal