The SV431DDVDUA 4-port DVI VGA dual monitor KVM switch lets you control 4 Dual Display computers using a single USB mouse and keyboard peripheral set. This dual view KVM switch provides 1 VGA and 1 DVI-I port per computer connection for high-resolution video, as well as audio switching capability between connected computers. The DVI/VGA KVM switch features an integrated 2-port USB hub that allows USB 2.0 peripherals to be shared between connected computers, and offers a compact design with a rugged metal chassis for durable performance. NOTE: While both DVI-I (analog) and DVI-D (digital) are supported by the KVM, source PCs must output the same signal for proper switching. It is recommended wherever possible to use DVI-D cables across all PC to KVM and KVM to Console connections. If necessary, please contact technical support for assistance identifying your source. This product is TAA compliant and backed by a Startech.com 3-year warranty with free lifetime technical support. Rackmount your KVM switch If you'd like to mount this KVM switch to your server rack, StarTech.com offers a 1U Rackmount Bracket(sold separately) that turns this KVM into a rackmountable KVM. More from the Manufacturer

• Direct channel selection and operation using front panel push-button or keyboard hotkeys
• Supports a maximum digital resolution of 1920 x 1200 and analog of 1920 x 1440; Recommended resolution is 1920 x 1200
• OS independent (no drivers or software required)
• Independent or simultaneous audio switching
• Full support for plug-n-play peripherals
• Rugged, all-metal chassis for use in harsh environments
• Status LED display for easy port status monitoring
• USB style keyboard and mouse, plus two other USB 2.0 peripherals can be shared between up to two computers
• Tone indicator for computer switching
• Selectable time intervals for auto scan