The Blackmagic Micro Converter Bidirectional SDI/HDMI is a compact USB-powered video converter that lets you connect between a consumer HDMI and professional SDI equipment.
It comes in both 3G-SDI and 12G-SDI connections, and can work with SD, HD and Ultra HD formats up to 2160p60.
This bidirectional converter can simultaneously convert SDI to HDMI and vice versa.