● 4 ways HDMI input; 2 HDMI ways output;
● 4 Port HDMI USB2.0 KVM Switch with audio;
● One dual-screen USB console controls two/four dual-screen computers and two additional USB devices
● 2 ports USB hub 2.0 built in; fully compliant USB 2.0 specification;
● HDMI video resolution in Max:4K@30HZ(3840x2610@30HZ);
● Independent switching of KVM, USB peripheral, and audio focus via front panel pushbuttons and hotkeys;
● HDMI digital monitor support - fully compliant with HDMI; also HDCP compliant
● Dolby True HD and DTS HD Master Audio support
● Multiplatform support; 
● BIOS hardware connection, no need drive program and control software;
● USB extension port in front of device, which is convenience for keyboard, mouse, flash and printer peripheral devices connection;
● Provide multi-types of hotkeys setting and choosing function, convenience for users to set hotkey freely;
● Auto-scan functions; 
● Attached HDMI+USB +Audio cable 4 pcs