The DVN-4Trio 4-Port Dual Display DVI-D KVM Switch from Smart-AVI allows the user to control up to 4 computers using a triple DVI-D monitor setup and a single USB keyboard, mouse, and set of stereo speakers. The USB keyboard emulation feature allows for error-free booting and provides accurate and quick source switching by means of keyboard hotkeys. This KVM Switch supports 1920 x 1200 (WUXGA) resolution with zero pixel loss using TMDS signal correction. The USB 2.0 sharing feature allows the user to access USB devices such as cameras and flash memory drives without having to plug them directly into the remote computer. In addition, the KVM switch supports independent switching of KVM, USB peripherals, and USB/audio ports. This means you can listen to audio from one computer while accessing the hard drive of another computer. The DVN-4Trio 4-Port Dual Display DVI-D KVM Switch is compatible with major operating systems including Windows, Linux, Mac OS, Unix, and SunOS.