Control up to 8 vga and usb computers from a single keyboard mouse and monitor the sv831dusbau 8 port rack mount usb vga kvm switch with audio cables included allows you to control up to 8 usb computers using a single keyboard mouse and monitor and features audio and microphone ports to switch between audio signals as well as pc ports based on a 1u rack mountable slim form factor design this 8 port usb kvm uses rear cable connections to maximize space efficiency multiple kvm units ca