Control up to 4 high resolution multimedia computers from a single consoleThe SV431DVIUAHR 4 Port High Resolution USB DVI Dual Link KVM Switch with Audio provides simple, yet comprehensive KVM control of up to 4 directly connected computers with dual link DVI output and USB keyboard and mouse connections.Audio switching capability and support for high resolution dual link DVI applications up to 2560x1600 @ 60Hz (up to 3840x2400 at lower refresh rates), make this KVM a superior switching solution that integrates perfectly into multimedia environments.The DVI USB KVM Switch is compatible with all USB supported operating systems with no software or drivers to install, and features a built-in USB 2.0 hub that allows you to share up to 3 high speed USB devices between computers.Backed by a StarTech.com 3-year warranty and free lifetime technical support.The StarTech.com Advantage- Dual Link DVI interface supports higher resolution applications, allowing you to take full advantage of your larger high resolution monitor’s workspace- Integrated USB 2.0 hub allows the user to have full multimedia control and share USB peripherals eliminating the expense of duplicate devices- Supports even higher resolutions (exceeding 2560x1600) by using a lower refresh rate. Example 3840x2400 @30Hz