Built-in 4-port USB 2.0 device hub for sharing high-speed USB devices * Versatile compliance with USB 2.0 and older versions * 4-port DVI USB KVM switch with audio and microphone switching and 2 x USB 2.0 hub ports * Channel selection/Hub port control by front-panel push buttons * DVI interface technology supports digital video signal transmission * Independent/simultaneous USB hub port, audio & mic channels and PC port selection * USB keyboard and mouse support