With the 4-Port DVI VGA Dual Monitor KVM Switch SV431DDVDUA, you can control 4 dual display monitors using a single set of USB mouse and keyboard. 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 between the connected computers. The DVI/VGA/KVM switch features a built-in 2-port USB hub, allowing USB 2.0 peripherals to be shared among multiple computers. The sturdy metal housing ensures durable performance. Note: Although the KVM switch supports both DVI-I (analog) and DVI-D (digital), both connected PCs must use the same output signal for proper functionality. It is recommended to use DVI-D cables for all connections between the PC, KVM, and console whenever possible. Please contact our technical support team if you need assistance identifying your source devices. Equipped with a 3-year StarTech.com warranty and lifetime free technical support. Rack mounting your KVM switch: If you want to mount this KVM switch in your server rack, StarTech.com offers a 1U rack mount bracket (sold separately) that converts this KVM into a rack mount KVM.