The CS1768 8-port USB (Universal Serial Bus) DVI KVM Switch is a multi-purpose appliance that consolidates access & control of up to 8 computers from a single USB (Universal Serial Bus) keyboard, USB (Universal Serial Bus) mouse, & dual-monitor (DVI-I & VGA) console. It can be cascaded to three levels – allowing up to 73 CS1768s to control up to 512 computers – all from the original single console, making it ideal for industry-grade IT applications & management. In addition, the CS1768 features multi-display functionality, which enables the use of standard USB (Universal Serial Bus) cables to stack up to four switches for quad-displaying in multiple-monitor installations where each computer is fitted with multiple video cards. It means that you can contrast, analyse & monitor video output in convenient ways, substantially simplifying the working environment. Furthermore, the CS1768 comes with ATEN’s on-screen display (OSD) function, which can access any computer connected to the installation, it also offers OSD configuration back up/restore to save/ back up the OSD settings & restore them as needed. The CS1768 provides multimedia keyboard support & is audio enabled. Two microphones can provide audio input to each of the computers, & you can listen to the audio output of each computer on two sets of speakers (on a one-at-a-time basis). Superior video quality – 1920 x 1200 (Single Link DVI); 2048 x 1536 (VGA); DDC2B Supports a digital (DVI) or analog (VGA) video output; Cascadable to three levels – control up to 512 computers Broadcast mode – allows you to send commands from the console to all computers to perform operations simultaneously. Multi-Display feature – stack up to four CS1768 units & display video from up to four monitors (dual display / triple display / quad display)