The HDMI-SDI-01 HDMI to HD-SDI Converter Box can run off of 9-24 volts of power, providing a solution that can utilize the included AC Adapter or DV or Pro batteries.(Adapters Sold Separately). Once you have power and an HDMI signal, the converter will output an HD-SDI signal across two separate lines, allowing for longer runs of industry-standard cable and a smoother workflow for on-set use. The sturdy aluminum structure comes complete with a mounting bracket, allowing for secure attachment to the ikan Elements 15mm accessory mounts or any other 15mm rod-based system. Because the HDMI-SDI-01 can be powered by either DV or Pro battery systems, you can choose where and how to connect a battery solution. The HDMI-SDI-01 has a total of 9 mounting holes on the bottom of the unit, all screw holes are designed to fit with Ikan Element products. Screw hole sizes include: (3)1/4"-20, (2) 3/8"-16, and (4) M4x.07.