Elecom 4-Screen HDMI(R) Multi-Viewer DH-SW2KMV41BK Retail Price: ¥35,818 Discontinued I used this to play games on four screens. I did a lot of research, but I couldn't find many products with the same specifications, so it's a valuable product for people who want to play games in a similar way. It works fine, but it's a product for professionals, and the product itself is slightly unstable, so please be aware. Product Description Elecom's DH-SW2KMV41BK is a "4-screen multi-viewer" that can simultaneously display the video from up to four HDMI devices (computers, game consoles, security cameras, etc.) on a single monitor. While a regular "HDMI switcher" switches between screens one by one, the main feature of this product is that it can display four videos side-by-side on one screen. Main Features and Functions • Various screen split modes In addition to 4-split (like a tic-tac-toe grid), it can display multiple patterns simultaneously, such as displaying one screen large and three screens side-by-side. • Seamless switching There is almost no time when the screen goes dark (blackout) when switching videos, allowing for smooth display switching. • Full HD (2K) support The maximum resolution is 1920x1080 (60Hz). *It does not support 4K. • Dedicated remote control included You can change the display pattern and select the audio source from a distance. • Metal case with excellent heat dissipation It uses a metal chassis that prevents heat build-up even during long hours of operation, making it suitable for professional use and security monitoring. When is it useful? 1. Game commentary and play: Consolidate the game screen, strategy site, SNS, and distribution management screen onto one monitor. 2. Business/Telework: Monitor and compare the screens of multiple computers on a single large monitor. 3. Security/Stores: Constantly monitor the video from four cameras on one monitor. 4. Stock/FX day trading: Display multiple charts on one screen. Points to note • 4K not supported: The output is up to Full HD, so even if you use a 4K monitor, the video will be Full HD quality. • Capture restrictions: HDCP (copyright protection) is applied to all outputs, so you may not be able to record the video passed through this product directly with a capture board.