This is the "Micro Converter BiDirectional SDI/HDMI 3G" from Blackmagic Design. This model can convert SDI signals to HDMI signals and vice versa, and is widely used in video production, live streaming, and live camera system construction. 【Main Features】 ・SDI⇄HDMI bidirectional conversion (simultaneous input/output supported) ・3G-SDI compatible (up to 1080p 60fps) ・Powered by USB-C (5V 2A) ・Compact & lightweight design (approx. 47 × 63 × 23 mm) ・Standard model for professional use in broadcasting, events, and live streaming ・Officially supported: Windows / macOS / various switchers and cameras 【Product Condition】 ・Operation confirmed (SDI⇄HDMI both working properly) ・The exterior has minor scratches from use, but is generally in good condition. ・Accessories: Main unit only (Please prepare a USB-C cable and power adapter separately) ・Alcohol cleaned 【Please Note】 Please purchase only if you understand that this is a used item and may have minor scratches. We will carefully ship it with simple packaging.