4 X 4 HDMI Multiviewer/Seamless Matrix Switcher Suppport Video wall HM44 Datasheet Manual Firmware CAD FeatureResolution up to 1080p@60Hz and 1920 x 1200 (WUXGA)Supports 2 x 2 Video-Wall with 4 selectable input sources.Supports seamless switching.Supports video sclaer.Supports PiP (Picture in Picture) function, allowing you to watch videos in a floating window.Supports OSD menu setting.Firmware upgradable through web server or RS232 port.Managed via panel buttons, IR remote, RS232, Web GUI and mobile APP.