This TAA compliant 4-port dual-monitor Dual-Link DVI USB KVM switch controls up to four PCs, each with two dual-link DVI video outputs. The switch also shares one microphone, one set of speakers, one keyboard and one mouse, across the four connected computers and features an additional built-in 2 port USB hub. The KVM switch supports four separate multimedia computer systems and the use of a dual-link DVI dual-monitor workstation, increasing productivity by enabling you to access more information at the same time. The 2-port USB 3.0 hub built into the KVM switch lets you share two additional peripherals (in addition to keyboard and mouse) among attached computers as if they were directly connected. With support for USB 3.0, you can achieve data transfer rates up to 5Gbps ensuring flawless performance from your USB peripherals - great for quickly transferring data to and from external USB 3.0 drives. With support for separate stereo audio and microphones, the KVM switch box connects everything you need to your systems, saving you money and desk space. The front-panel push-buttons make it easy to switch between systems and activate the auto scan. The hotkey functionality makes accessing each system quickly, while a buzzer sound confirms the switch. StarTech.com offers a wide selection of high-quality KVM switches and KVM-related products to help you access your systems more efficiently, without the expense and clutter of extra keyboards, mice, and monitors.