This 4-Port DVI+USB KVM Switch with Audio & USB (Universal Serial Bus) 2.0 Hub means that you can control 4 USB (Universal Serial Bus)-enabled multimedia computers with DVI video interfaces, using only one USB (Universal Serial Bus) keyboard, mouse, monitor & a set of speakers & microphone. A cost-effective & versatile KVM solution, the DVI+USB KVM switch features an integrated, 2-port USB (Universal Serial Bus) 2.0 hub that lets selected computers access shared high speed USB (Universal Serial Bus) devices, eliminating the cost of duplicate USB (Universal Serial Bus) peripheral purchases.