4K-compatible multi-viewer that simultaneously outputs and switches between four HDMI inputs on a single monitor. - Model: 4K 4X1 Quad Multi-Viewer - Features: Full screen, 1080P/4K support - Input Ports: HDMI input x 4 - Output Ports: HDMI output x 1 - Audio Switch: Yes - Remote Control: IR remote control compatible Thank you for viewing. I have confirmed that it is working perfectly. Very convenient for combining images from multiple devices onto a single monitor.