Thank you for viewing. High-performance converter that converts HDMI signals to SDI. - Model: MiniConverter HDMI to SDI 4K - Input terminals: HDMI - Output terminals: SDI - Power: AC adapter included I used it for work, but I removed it and haven't used it since, so I'm selling it. I have confirmed that it powers on, but it is a used item, so no returns or refunds are accepted. The manual can be downloaded from the internet. Please download it if you need it. Please check the photos carefully before purchasing.