The B024-DUA8-SL DVI/USB KVM Switch allows you to control eight computers with audio using a single DVI monitor, USB keyboard and USB mouse. Plus, by cascading up to three levels of KVM switches, you can control up to 512 computers at the same time.Recommended for IT managers needing centralized access to a variety of digital and analog servers, this DVI/USB KVM switch also supports a VGA display when connected to a DVI to VGA adapter (such as Tripp Lite's P556-Series).The DVI-I single-link connector supports digital video resolutions up to 1920 x 1200, including 1080p, and analog video resolutions up to 2048 x 1536. The multi-view installation feature lets you stack up to four KVM switches for connecting computers with up to four DVI outputs and displaying video on up to four console monitors, giving you flexibility in video output. A 3.5 mm microphone jack provides audio input to connected computers. A 3.5 mm audio jack provides 2.1-channel sound to connected speakers.The OSD presents a text-based interface in eight different languages and allows backup of KVM configuration and user profile information. Dual-tier password protection enhances security for an administrator and up to four users. A DB9 cable is included for firmware upgrades that keep the KVM switch up to date with the latest technology. Easy front-panel access to USB 2.0 hub ports allows quick connection of two USB devices, such as flash drives and printers.