The CS1788 8-Port USB DVI Dual Link KVM Switch is a multi-purpose appliance that consolidates access and control of up to 8 computers from a single USB keyboard, USB mouse, and dual-monitor (DVI-I and VGA) console. It can be cascaded to three levels – allowing up to 73 CS1788s to control up to 512 computers – all from the original single console, making it ideal for IT applications and management. In addition, the CS1788 features multi-display functionality, which enables the use of standard USB cables to stack up to four switches for quad-displaying in multiple-monitor installations where each computer is fitted with multiple video cards. It allows you to contrast, analyse and monitor video output in convenient ways, substantially simplifying the working environment.1x CS1788 8-Port USB DVI KVM Switch with Rack Mounting Kit2x 2L-7D02UD USB DVI-D Dual Link KVM Cable Sets1x LIN5-04A2-J11G Firmware Upgrade Cable1x 0AD8-8605-40MG Power Adapter1x Foot Pad Set (4 pcs)1x User Instructions