Aten 2 Port 4K 30Hz HDMI/VGA to HDMI Converter Switch, supports control via RS232 terminal, 3.5mm audio + VGA or HDMI input to HDMI output Supports Auto Switch – the VC1280 automatically switches to a newly plugged-in source Easily switches sources among 3 modes (HDMI/VGA/AUTO) via a pushbutton HDMI 1.4 (3D, Deep Color, 4K); HDCP 1.4 compatible RS-232 Channel Transmission – allows you to connect to serial terminals or serial devices for firmware upgrade Package Contents 1x VC1280 2-Port 4K HDMI/VGA to HDMI Converter Switch 1x Power Adapter 1x RS-232 Terminal Block 1x User Instructions